There’s a plugin for firefox called downloadhelper ( I believe, I can double check when I get home ). You can rip vids from tons of sites with it, I use it all the time.
Edit: Most likely it’ll be in FLV format, which I don’t think WMP can run, so you might also need an FLV converter to format it to AVI or mpeg.
I’ve got adobe captivate. I was thinking of recording the screen when it’s at full screen, then I can readily convert them to whatever, but I’m afraid that the quality will suffer.
…in case that didn’t work: www.zamzar.com – You can use Zamzar to convert You Tube videos to a format you can use. Copy the You Tube link. Go to Zamzar and click on Download Videos. Then paste the link into the step one box. In step 2, choose avi. as your format. Then give them your email in step 3, click on convert and wait. It will prompt you to check your email. It can take between a few minutes to 6 hours to receive the email. I don’t know if this works for porn too.