this is a part of a service that affects your explorer.exe and a possible remnant of a Desktop Hijacker
Located here
Service: Net Agent - Unknown owner - C:\WINDOWS\dls0523pmw.exe
are you by any chance using Onecare ( Subscriber ) ? If yes avail of their support here for help with removal. How to contact support - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=1183038&SiteID=2
then if not please call Microsoft Security hotline at 866 727 2338