Works for me ok but  go HERE, enter your service tag. For the OS chose Vista 32 bit. Go to the chipset listing. Click on the Ricoh driver listing. Do not worry about the Vista part it will work.
I just installed win 7 ultimate on a Inspiron 9400/E1705, did a clean install, not an upgrade, formatted the partition and installed Ultimate clean.  Everything appears to be working just fine, lan, graphics and sound  are all ok. In Device Manager there is a splat under Other Devices > Base System Device.  Is there anything else I need to install for this system , I am not looking at any win 7 files under drivers and downloads. Thank you
Win 7 Ultimate 