Okay. First thing's first.
A "professional" would just simply boot up some kind of pro, fully-purchased version of some random anti-virus, make a scan, delete-without-caring any files that pop up on the scanning window, give back to you the computer, and ask for his hundred bucks.
The funny part is; you can do the same thing a "professional" can do for free. That is, of course, excluding the price you pay to your Internet Service Provider.
So, if you are looking for a good anti-virus to remove a virus-worm-Trojan...thing, I would recommend some free, fully functional anti-viruses or anti-malware programs that work and are confirmed to work by many other users. Let's name a few, shall we now?
1) There is avast!, which I use and LOVE for it actually works very well
2) AVG, which I know a lot of people tend to download, but I wouldn't recommend it, for avast! is starting to (well, it actually already did..) beat it
3) Avira
4) Hitman Pro
5) Malwarebytes
And that's just to name the most popular ones. For more information on each separate program, check my sources. All of the links are approved to have Excellent trustworthiness by Web of Trust (WOT for Firefox)
Good luck!