not sure but think iam key logged

using smileys and stuff on yahoo messenger all I see is a box with a lil red square a blue triangle and a green circle in it how do i fix it I have uninstalled and reinstalled messenger still getting it i also get a trogan virus saying it cant be deleated cause it contains a zip help me please

Download "Hijack This" by Trendmicro and run the utilities - FREE.

You can also download SpyBot Search and Destroy, install and run it - FREE.

Lastly, try a different antivirus software. You will need to uninstall all the parts of your existing antivirus software, and immediately install a different one. May I recommend AVG and you can try it free from http://free.grisoft.com