I made an order at a friend's house once on his computer - went thru IE, but it I would get the same error message you are. So, I switched browsers over to Netscape & the order went thru successfully. I use IE at home 5.x & now 6 & have never had problems ordering. So, it may just be a computer being picky or as sjk77 suggested, clear the temporary internet files & see what that does for ya.