Although I have written about this several times in this blog, I find it's one that is easy to forget. Microsoft makes available, on a monthly basis through its Automatic Updates, a tool called the Microsoft Malicious Software Removal Tool. You'd think that might be MSRT for short, but they take it a step further and name the executable program MRT.
If you have Automatic Updates enabled, this tool is downloaded each month, and the best information I once found said that they (Microsoft) ran it but uses the Quick Scan option. What I have recommended and recommend strongly now, is that you run a Full Scan. It takes a long time, but it shouldn't bother you much as it runs.
To run it, and you can do that at any time, click on Start, then Run, and enter MRT in the box and click on OK. That will get it going, but you need to specify Full Scan. If you do nothing but run it, the default is Quick Scan.
This is just one little bit more insurance. You are betting, remember, that your Windowxs XP machine will run indefinitely after April 8. Or at least I am! :-)
This is the screen displayed at the end of a Full Scan: