This was kida hrd for me to find and I thought it might be for others too. To get to Bart's Treefort go into the TV room. Look in the bottom left hand corner and the is a tiny bit of light coming through. click on the light and you will appear in the Simpson's Backyard and Bart's Treehouse in clear view. You get to chuck water balloons too.

To play the donut toss game go to homer's bedroom and click on homers desk on the bottom right corner of the screen.  Then click on the right drawer and you should be able to pick up a note and keep the note. Then go to the power plant and to secter 7G. You should now be able to pull the lever on the wall in the upper left part of the screen. Then a rope will fall pull it. Turn the light as it comes out. Finnaly get the donuts.

To get infinite cards, go to Krustyland Studios and go into the control room. Look behind the clipboard and there will be a card. Get the card and leave. Go back in the room. The card will be back. Keep doing this until you have all 74 cards.

To get to gerble food (hamster food) go to Mrs. Howers class and look in the bottam righthand side Drawer and you will find the gerble food.

First go to Homer's House. Look under Bart's bed. Get the piece of Paper. Look in Lisa's desk. Get paper from right hand drawer. Go to Springfield Elementary. Look in the bottom right drawer of Miss Hoover's Desk. Get the Gerbil Food. Look in cabinet under Gerbil. Get the Card. Look in Bart's Locker(the one on the left.)

Get the paper on the door.

Go to Town Hall. Get Card on floor to the left of Mayor Quimby's Desk. Look in middle drawer get Krusty's Key.

Go to Krustylu Studios. Look at TV. Get the Card.

Go to Retirement Castle. Open Grandpa's bottom drawer. Get StoneCutters Ring.

Go to StoneCutters Hall. Look in podium. Open the box. Get the key. Get the book next to the podium.

To Get the rest of the cards:

Moe's Tavern: Open secret door behind bar. Open one of the boxes. Get the card on the floor in the background.

Library: In ashtray next to Krabappel's desk.

Church: In podium.

SNPP: In reactor Core. Look next to the door to the left.

Retirement Castle: Sometimes there will be a card near the coffee table next to the door of Grandpa's room.

Once You have gotten the StoneCutter's ring and the cards in the Elementary School, SNPP, and Krustylu Studios, just go to Town Hall, the Library, and the Church to collect the rest of the cards. They're always in the same place as the first ones you found. Though sometimes they're not there at all. But don't worry, when you come back, they'll be there.

After you collect all 74 cards a 75th card will appear. It will instruct you to visit http://www.foxinteractive.com/frink/ and you will be rewarded with secrets about the game and other various fun stuff.

Here are the locations where you can find the trading cards.

• Kwik-E-Mart: In the Captains pipe in the display.
• Simpson House: In Magies Room under the crib across from the monkeys paw; Outside the window in the tree at Bart's treehouse.
• Flanders House: Behind a book in the bookshelf.
• Retirement Home: In the upper right hand corner there's a little book shelf, and the card is between some books.
• Krusty's Studios: In the control room behind the clipboard on the wall
• Krusty's Studios: Behind the newsletter above the fountain.
• Krusty's office: In the TV.
• Library: In the garbage can.
• School: In the principles office in the tape player in the bookshelf, not the one on his desk.
• Church: Behind podium.
• Power Plant: In Nuclear Core by light switch on the left.

To use "Professor Frink's Navigation Transporter", (the teleport trick) do the following:

Access the game map and hold Shift + V + S. Then double click the place you would like to be transported to.

1. Go into the mayors office (townhall) and look in his desk to get the key that has Krusty's face on it then you'll have access to Krusty's office!

2. Go to Moe's, look in his desk and find keys that says "SPANKY" and you'll have access to Skinner's office!

3. Go under Bart's bed you'll find a voodoo Homer (try poking him) and if you look hard you may find a paper... Now go to the Elementary school and you'll have access to the lockers. Click on the first locker and then click on a paper and then you'll then have access to Grandpa's bottom drawer you'll then find the STONECUTTERS RING!!!

Here's how you get into the Stonecutters Guild and Mr. Burns' fireplace.

First, go under Bart's bed, attached to the top is a note, grab it. Go to the school, go to Bart's locker (one on the left) and look for a paper that you can grab from the side of the door. Go to the retirement center and look in the bottom drawer. There should be a ring. Now go to STONECUTTERS and Homer will be singing. Crawl under the shelf and look in a box. There's the key to Mr. Burn's fireplace.

If you can't get the ring, just use the teleport cheat and click on the Stonecutters place.
NOTE:Only do this if you are totaly stuck. Otherwise,you'll ruin the game because this cheat skips a huge chunk of it.

To get all clues press Ctrl Alt & F7 at the same time.

After you get the key for the secret room in Mr. Burns' office (found in the Stonecutters podium) go to Mr. Burn's office. If you click on the floor in front of his desk a model will pop up.