Hi,
What type your Windows 7 operating system, is it 32 or 64 bit?
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=c02033168
Is it connected via USB or thorugh the network?
For 32 bit you may use the Vista software in compatibility mode to get full functionality, for 64-bit scanning is onl supported via direct USB connection as you may find stated below:
Please provide the informaton listed above if you need any further information.
Shlomi