We their froyo roms that have tethering and Mobile hotspot in the setting of the phone with apps. But be warned you will lose apps2sd from the all the apps on the market,like on cyanogenmod roms and other roms that have them.
Plus this is lower on memory then stock roms that usually have about 248mb on android 2.1 os and 2.2 os.
http://www.droidforums.net/forum/lit...-features.html
