Over at SDX-DEVELOPERS we have a rooted kernel for 2.2 (Froyo) and many other goodies! Stop on over and check out what we have done and ask questions
Acclaim - Android 2.2
Acclaim - Android 2.2
Follow along with the video below to see how to install our site as a web app on your home screen.
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I have done it on two acclaims and it has made the phone a hundred times better. I havent had any issues, if you can follow directions, then you shouldnt either. Everyone is very helpful over there too. Try it out, and if you dont like how it goes, then you can always flash back to stock 2.2 and be right back to normal. Good luck!
Basically when you use the flash program, copying and removing tar files, you have to make sure you follow those directions to the "T" and you should be just fine.