I adapted these steps from another source, but here's the basic run-down for using most legacy URC remotes on Windows 7.

• Install Windows Mobile Device Center
• Connect the remote via USB

Note: Do not let the remote go to sleep during the remaining steps.

• Double-click the exclamation mark in Device Manager
• Click "Update Driver"
• Click "Browse My Computer"
• Click "Let Me Pick"
• Choose "Mobile Device"
• Choose "Microsoft" as the manufacturer
• Choose "Microsoft USB Sync"

Windows Mobile Device Center should now open, and the remote should chime when it connects.