Everytime I try to purchase something off the internet, after clicking the submit button or what have you, the screen goes blank, says done at the bottom, and has the word 'error' in the address bar. This happens whenever I try.

I'm using windows XP, IE, and I don't have Norton. My security is on medium.

Go to this page: http://www.toughadmin.com/article.php?article=Secure

See if that does it.

Which is the security program that you have?