CANNOT connect to mogul through USB and PC?????

[princelton]

On the home machine Vista 64 bit, at work XP, both systems, same issue.... connect to usb cable, turn phone on, hear "connection chime" on PC, windows mobile device center should open, it doesn't.... Now there is an icon in the sys tray, "add/remove USB device", right click and device is HTC mobile sync. Look @ device manager, sometimes see "HTC mobile sync", sometimes "windows mobile device" (sys tray icon same either way). I can navagate to phone in "my computer" try to transfer files From phone get "access denied" try to put file On phone I get "cannot transfer file xxxx. File may be corrupt or may not exist" or something to that note. So far I have tried all settings on phone for connections, and active sync (connect is greyed out in active sync in phone) Mobile device center settings, I have tried all combinations, and it will not connect. (work computer has active sync, can explore as in my computer, but no file transfer, same issue different wording on the errors) I have tried a different, known good cable even! I have re-installed drivers in windows both with drivers from here, and ones for 64 bit amd processor, on 64 bit vista from the m.s. "help" center recomended for this problem, didnt do anything but install and tell me my device is ready.... it wasnt.... HELP it so seems like a setting!!!!