When the device won't boot, is it possible to connect and access the device's ROM through the PC?

For example, I enabled KITL in "USB" and "Active" mode, then I put the device in the cradle, the PC recognized it as "HTC USB SYNC" and then ActiveSync started but after about a minute gave and error saying it was unable to connect saying the device isn't a SmartPhone or PocketPC.

Is there some sort of MSDN developer software or something I need to connect through the USB in KITL mode since ActiveSync won't do it?

Any ideas????