I have a few observations about setting up a dual core laptop with no Hyper-threading using your guide. It's running Win7 64bit.
It seems I get WUs with more points using the SMP client than running the desktop client. I installed it into it's default folder (C:\\Program Files (x86)\\Folding@Home Windows SMP Client V1.01). When I went to run the install.bat, I had to run the Command Prompt using Administrative rights and work my way to the installation directory to run the install.bat. When I made the desktop shortcut, I also had to give the SMP client administrative rights, so it could decompress and create the WUs.
If I would have installed it in My Documents folder, then I wouldn't have needed to use administrative rights at all. Lesson learned.
I thought this might help folks that may want to use a dual core laptop with no Hyper-threading to fold with.
I also set-up another single core laptop using the SMP client, to see if it may get better WUs. I couldn't use the -smp in the desktop shortcut, because it's only for 2 or more cores. We'll see what happens.