I was looking for a process that would allow someone to manually add libdvdcss.dll to a 32-bit Handbrake version 0.9.6 install on 64-bit Windows 7. After a bit of web searching the process that seems to work for many is:
1. Download GStreamer WinBuilds v0.10.6 GPL (x86) (GStreamer-WinBuilds-GPL-x86.msi ) from OSSBuild Downloads.
2. Install GStreamer.
3. Navigate to C:\Program Files (x86)\OSSBuild\GStreamer\v0.10.6\bin
4. Copy libdvdcss-2.dll to C:\Program Files (x86)\Handbrake
5. Rename libdvdcss-2.dll to libdvdcss.dll
Check Handbrake Windows 7 64-Bit DVD Ripping for a 64-bit oriented guide.