I just wanted to tell that these registry edits also solved my problem of synchronizing my phone.
I had the added trouble that my phone is application locked and I had to use a signed registry editor.
I used the one found here:
http://blogs.conchango.com/stuartpre...1/10/2376.aspx
And I have attached the Registry editor signed by HTC (QTek) to this post. So that others who have this problem can still find it when the eforementioned site goes down.
Hope this helps others.