Use Win7 Pro Enterprise or Ultra?
Use XP Mode, connect device and install drives to it.
Others use VMplayer or VirtualBox
They can be harder because while easy to install XP, you still have to activate the OS on the VM.
I have old Sony device that only has unsigned XP drivers that I use this way on Win7 x64.
If you get drivers... Old Device still likely won't get new firmware. Be lucky you get last update when Company are nice. Old device may not connect to server.
Many XP/Vista (32 bit) Drivers are unsigned because getting then signed cost big money. Driver Signing is big money to M$ and others.
Signing a Driver for Public Release MSDN
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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)