Perhaps, this person used a program similar to this....>>http://www.spectorsoft.com/products/...ows/index.html

I know of one, and am not quite sure if this is the one, but you send it to a person in an e-mail and name it something inconspicous like "shell32.exe" or somethng like that so they won't suspect it. When the file is opened, there is no trace that the module was installed. Also the only way to uninstall this program, or so it claims, is to have the uninstaller the program came with. No spy-ware will catch it. This is also ILLEGAL if the other person is not aware that it is running on their computer, and you are logging their internet activity. Usually companies and/or parents will use this software to monitor their computers, but the companies are suppose to inform their employees of its presence. I am quite sure this falls into the category of "keylogger" but the program I was referring to gives you actual screenshots of this person's desktop. I don't see why this wouldn't or couldn't stop this person from copy and pasting and then printing out your conversations from so long ago. Hope this helps!