For those having any issue with wireless tether on Damage Control 3.2.3, there is a file in the thread below, Post # 1, that works fine, without going through all the steps, BUT you must manually uninstall the previous version of wireless tether first. You don't need to be at the unrevoked3 level, whatever unrevoked you ran to get Damage Control to install works fine. Just remember to MANUALLY uninstall the older wireless tether first. I had a version of wireless tether that ended in "pre2.apk", and the new one ends in "pre2-1.apk". The new one won't install (for me anyway) with the old one installed.
http://forum.ppcgeeks.com/showthread.php?t=128790