need some quick advice

[tthree]

I just downloaded Microsoft Office from Limewire. First of all is this a good idea? I have Mcafee antivirus which warns me of any suspicious files before the download actually begins, so I think the files are safe. I then dragged the file onto my desktop and was wondering if I can delete the file from Limewire and if so...The file obviously cannot be uploaded from others once its been moved?!