If you only have 100 dollars I suggest you save it. I have a good ammount of savings so I can spend money on shit I want and still have some left over.
those little IR remote control helicopters are pretty fun and only about $25. Get a few good DVDs like Big Trouble In Little China, Fistful of Dollars, and Robocop or something. Then get a good long RPG for your PS2. Persona 3 FES is O.K. (corny as hell story) and long. Hours of fun and I bet you can get it all for under $100!
Because... video games? Just because my current gaming platform isn't a 360 or PS3 doesn't mean I can't be on this site asshat. "Just saying... If my only platform for games was 11 years old, I would be extremely depressed hanging around Giantbomb which only deals with new releases generally. I made no mention of you not being allowed.
All you've got is a PS2 and a shitty laptop? Then I'd suggest you wait until you have 50 more dollars and get a used 360 off of ebay. Sometimes you can them even cheaper than that. Time to get in the now, brother
If you don't want to do that, I'd still suggest you stick to ebay and just go nuts on PS2 games you've missed. Much better deals than going through the bargain bins at Gamestop or Walmart.