Cannot hotsynch with Palm m515 to Vista 32 home, cannot install driver, digital signature error

I recently got a used palm m515, it came with the manual, cradle, cables etc. but did not include the installation disk for palm desktop software. I downloaded software version 4.1.4 from the hp website, no problems. I went through the setup for the m515, no problems. I tried to hotsynch the first time via usb from the cradle, and was prompted by windows to install the usb driver. When I attempted to install the driver, I got the following message:
"The driver cannot be installed because it is either not digitally signed or not signed in the appropriate manner. Contact your hardware vendor."
Since then, I have uninstalled 4.1.4, reinstalled it, got the same message, uninstalled it again, tried installing 6.2, same message, uninstalled that. I've hard reset the m515 twice. I've made sure everything is plugged in, turned on, etc.
Please help!

Just some general thoughts...
Are you absolutely sure you have a 32bit Vista system? It sounds like the error you get when trying to connect to a 64bit version...
Did you connect the device before installing Palm Desktop? USB devices need their drivers in place prior to connecting the cable.
A "Clean Uninstall" sounds in order before trying anything else. See this thread by smkranz for instructions.
I'd stick with version 4.x if indeed you have a 32bit system. 6.2 will require another program to get the database structure correct with older PalmOS devices.
(Speaking of "Clean", make sure the HotSync port on the m515 is clean, and the fingers in the cradle all look straight. They can be cleaned with electronic "contact cleaner", or carefully with a q-tip and isopropyl alcohol.)
WyreNut
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This question was solved.
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Click on the "Thumbs up"button on the left to say "Thanks"
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Cannot hotsynch with Palm m515 to Vista 32 home, cannot install driver, digital signature error

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