avast! Virus Cleaner is a free tool that will completely remove selected viruses & worms from your computer. It is able to stop viruses that are active in memory, it will disinfect your files, remove virus registry & startup items, and even delete the virus working files. Currently, it can handle the following virus families: Badtrans, Blaster, BugBear, Ganda, Klez/Elkern, Nimda, Opas, Sircam, Sobig, Yaha, all including the latest variants.

It's a full-featured pop3 email checker. When new messages arrive, it will notify you. If a message includes a Klez worm virus or some defined spam addresses, CC Email Checker will mark it out. It supports delete mail remotely. So you can remove it. In a word, CC Email Checker is also Klez removal tool and anti spam software.