The first thing I need you to do is download the file from here:ServiceFilter.zip - Get list of XP/2000/NT Services
Extract the zip file to your C: drive. Once it is extracted there will be a directory on your C: drive called ServiceFilter. Inside the C:\ServiceFilter directory will be a file called ServiceFilter.vbs. Simply double-click on the ServiceFilter.vbs. When the script finishes a wordpad document should open with the unknown services listed in it.
If the script could not access wordpad then you will see a message box telling you so. In that case you need to open POST_THIS.TXT by double-clicking it and pasting the contents as a reply to this topic. Please provide a brand new hijackthis log as well in this reply.