EuroMIX: If you do buy a copy I recommend playing Rayman Optimum instead. It's a free fan alteration that aims to easily provide the most complete version of the first game. Rayman Forever is unfortunately inferior.
darkredshift: Thanks. I found that out the hard way. I've even beaten the game on PC since getting Forever. Still not on Gameboy Advance but it may not be wholly worth it due to the ending sucking.
Is there a safe download for it and will it work with forever?
I believe Optimum is standalone, but technically not legal. Short of complaining to Ubisoft so they work on releasing a version that improves upon Forever (likely not going to happen), it's probably the best way to play Rayman 1, and you can buy a copy of Forever just to be "kosher", if you will, though it's not required.
You can find more information on Rayman Optimum here: [url=]http://raymanpc.com/forum/viewtopic.php?f=13&t=9466[/url].