Cant connect by USB anymore

[GuillermoOZ]

I don't know what happened. Playing with the exchange server and following instructions on verizonwireless to setup MS DirectPush, I accidentally setup WirelessSync, which became annoying. I turned it off but after that I could never reconnect through usb anymore.
I tried in different PCs (desktops and notebooks) with no luck. I went through the ActiveSync troubleshooting and this is whay I get...

Unable to establish a connection between the PC and the device. Get up-to-date solutions to common connection problems. Please click the following link:
http://go.microsoft.com/fwlink/?LinkId=65257
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No additional known issues have been found.
If you are still experiencing problems please send the results to Microsoft to help improve future versions.


I followed all instructions with no luck. Since I can't connect the device to a machine, I cannot run the add/remove programs. I would love to roll back the os to factory default and start over, I wouldn't mind, but, how do you do that?

I appreciate your help!

G