The most critical issue facing D610 users upgrading to Windows 7 is the Intel GMA 900 graphics adapter.
You must install the Windows 7 32-bit version; 64-bit will not work with the D610's Pentium M processor. Essential Drivers for Windows 7 dell d610 windows 7 drivers
The Broadcom 575x controller usually installs automatically via Windows Update. If it fails: The most critical issue facing D610 users upgrading
For users unwilling to manually source drivers, Windows Update provides a viable alternative: Windows Update provides a viable alternative: