hi, most development for the desire hd (American Inspire 4g) goes on at xda, you should check there.
here's the forum. Go to the general or q&a threads to find stuff about rooting and android development to find stuff about roms, recoveries and kernels.
I was trying to root my HTC Desire HD and all went well then when it rebooted I got stuck in recovery mode and I tried taking out my battery, wiping data and it is still stuck in recovery.