Brief Explanation: D/L this from Fjorodor's site, run it before you load up EQ, and notice the difference in performance
Detailed~
Its a utility for Everquest that runs in the background. It appears as an icon next to the clock. You run it before you load up Everquest. In a nutshell it dramatically increases the performace of Everquest specifically if your a dual-clienting. It makes the second window load faster, as well as the first one. I like performance over quality, so normally i have my setting jacked down even though i got the RAM (512) and video to handle (128MB) to handle it, so doing this helps with speed too. The program itself does something to work with Direct X so everquest uses less of those resources. This allows for doing other stuff in the background (i.e. internet)
http://teqim.sourceforge.net/?p=eqplaynice
This is the site, however the file they got on there works with the latest client which is 0.5.5, whilst WintersRoar is 0.5.3
Im assuming the file Fjordor is hosting is the 0.5.3 one so download from his site.
Try it out and reply how it works for you. Personally, I can't go back!