How to use Umax Astra 5600 in Windows 7 64 bit?

I have a Umax Astra 5600 Scanner. I lost my PC in an accident while moving. Now I have a HP Pavilion g4 with Windows 7 (64 bit). I tried using my scanner on it but the scanner is not even recognised on windows. I tried loading drivers but those were WinXP drivers and are not working with Windows. It is very good scanner and will be happy to keep working on It. Please guide me. It works on a friends system that uses WinXP. Please help.

Question by Manasvi Gaur on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.