This is for those with a UMAX ASTRA 2000P (and maybe others) with windows 2000/xp
First , download these files,
http://www.umaxtech.de/ftp/vs355p.exe
http://www.umax.de/download/ScanPC/LPT2000.ZIP
Install vistascan if not already done.
After the VistaScan installation, Windows (XP/2000) does not register the driver correctly with the device manager and the scanner gets detected as an unknown component at Windows start up, the proper entry has to be done manually. Close the Assistent dialog with a cancel button. Extract these files into a folder on your hard disk. The scanner has been registered as an unknown device. Double click this entry the device manager to open the properties dialog. Click on "Driver" and then on the button "Update". Select the option "Software list..." and in the next dialog the option "Do not search...". Click on "Continue". In the list of hardware types select "Image processing devices". Click on the button "Disk" and refer to the folder in which you have just expanded the INF files. Click on "Open" and in the list select your scanner. Ignore the Windows-Logo test warning and click on "Continue"/"Finish". Now the scanner has been correctly register with the device manager and will be displayed under "Image processing devices".
... I just found that at the UMAX UK site, who seems to be much more helpful then the US one... GOD SAVE THE QUEEN !
The files come from the UK site as well.
It worked for me and I was so happy, I had to share this to all of you !
Good luck !