I want a phone that
-Has a camera
-Is under $100
-Stylish
-Has the ability to IM (optional)
-Works with Sprint

P.S. It might be impossible

Stylish is a matter of opinion, but I would say the LG Rumor has all of those features if you're buying it with a plan and going to do the rebate. It's 110$ if you buy it in stores, don't do the rebate, and don't wait 4 days for them to order it (you go in, buy the phone, and walk out) I'm not sure if you have to have a plan to do that.

If you get a plan and buy the phone in the store, let them order it (you come back in 4 days while the phone is shipped) and you do the rebate it's 50$

EDIT: It comes out in blue on the 27th of July (2008)

Here are my 2 favorite Sprint phones:

The Rumor™ by LG® (http://nextelonline.nextel.com/NASApp/onlinestore/en/Action/DisplayPhones?phoneSKU=LG260WKIT)
-Has a 1.3 megapixel camera
-Slides open to reveal a QWERTY keyboard
-Can IM, text, and has an mp3 player
-$49.99 (with instant savings/mail in rebate)

Muziq™ by LG®
(http://nextelonline.nextel.com/NASApp/onlinestore/en/Action/DisplayPhones?phoneSKU=LG570PKIT)
-1.3 megapixel camera
-$99.99 (with instant savings/mail in rebate)
-Pretty sweet looking (available in black and pink)
-Has a media player
-Can't IM, but it can text

Hope this helps!
You can also check the Sprint website (http://www.sprint.com/index.html) for more choices!