Hmm... Not sure what the issue is here.
Is there another monitor connected to the PC at the same time as the 32" HDTV? If so, did you remember to enable the secondary monitor (HDTV) in your PC's control panel?
When scrolling through the HDTV's inputs while the PC is connected to it via the VGA cable, do you see the VGA Input selected before it tells you, "No Signal"? I'm thinking the PC Input might be disabled, but I didn't see anything in my user's manual that would suggest that could happen.
What graphics card is currently installed in your PC?
-Wolf sends