I do not recommend the pocket programmer III. It is flaky and their tech support is total crap. I had an issue where it wouldnt program 2732 after a software update. They insisted I was using bad roms even after telling them many times they were NOS ones that program just fine in other programmer. I ended up sending them a tube of them to "test" but never got them back or even heard a peep from them again.
I also bought a rather expensive prom adapter to burn bipolar proms and it never did work.
Buy the GQ-4X and you wont be disappointed. It will do everything from 2716 to 27C080 without an adapter. For old bipolar proms I use an ancient Data IO 29B. I have a second GQ-4X nib as a backup in case mine ever fails. I have burned thousands of eproms with mine...wore out the original zif socket I used it so much. New zif socket and its still kicking along.

Currently running GQ4X on windows 7 64 bit.
When using USB programmers you should always use a usb port on the rear of the pc. Many times the front ports do not supply enough current and you may have issues. I run external power on mine always, it just stays plugged in all the time.
The software says it does not support 2532 but no worrys there. 2532 are what I use the most and I have never had an issue burning them with the GQ-4X.