If your still stock for some reason and want to use Skype, you should still be able to download and install the older cracked version of Skype that will allow the FFC to work on the stock Froyo ROM.
[Download] Skype With Video Chat For The HTC Thunderbolt
I see. I wasn't aware. Does anyone have the version of the APK from that download link from AP? The reason I ask is that I have another hacked version of Skype that I am pretty sure is a later version than the one being distributed from AP. This one may work for unrooted phones after the update. I am pretty sure it is a hacked version of 2.0.45.Apparently the latest phone update that was sent out in the middle of July breaks this version and it no longer works.