This one is a letter supposedly from a major delivery service, like DHL or FedEx, claiming they have a delivery (they give a delivery number) and you should click on a link to get the delivery sorted out.

Yeah, the link is a virus. My shields are good enough that I can quarantine a file and take a peek at it without actually firing it off.

These letters look very official, and many have other links that actually link to the real website.

A good rule of thumb is to run your mouse over the link WITHOUT clicking it, and see what address flashes in your browser. Most virus addresses have a lot of suspicous features, like mysterious addresses that have nothing to do with the supposed sender, or ending with ".exe" files.