What are your system specs. In any gaming system you will want the maximum system for best performance. A lousy system gives you lousy play. Desktop customization is similar. If you want to use it all, and lots of it, you'll need a decent system.
A PIII 500 Mhtz, running WindowsXP and 256 Ram, probably won't be enough to run Object Dock, DesktopX, Windowblinds,Sysmetix, and WindowsFX, and CursorXP. It may work but it may be sluggish at times.
Just like trying to run Half Life 2 on the above system is impossible.
I would try getting a P4 3.0 Ghtz system, at least 128 MB video(256MB for gaming), 1gig of Ram, WindowsXP Pro. Then, you won't complain about anything slowing down your system.
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