I've been to a couple of sites that offer customized themes, windowblinds and screensavers. How much of your system resources does a screensaver actually use? I know the obvious answer is that it will depend on the type of screensaver program(3D rendering vs. a 2D slideshow). Also, once you start using your computer and the screensaver is no longer in operation, is it using enough background resources to worry about? The reason I ask is because a lot of tweaking sites suggest disabling these to free up system resources. I had not been using one for quite a while and ended up developing burn-in on my old monitor. I now have a new Viewsonic that I would like to keep happy and healthy so I'm running the standard screensavers that come with XP for now.
I'm also interested in some of the custom themes and windowblinds I see around. Are the "themes" just additions to the themes options I see when I go to customize my desktop? I'm guessing that if I download and run some of them that I wont be using any more resources than I'm currently using by running the silver or classic blue theme that came with XP. I tend to be a minimalist and try to keep everything clean and streamlined so i don't want to clog my system with uinnecessary garbage but I do like some of the custom looks. Here's a link to the site I've been poking around in so you can get an idea of what I'm talking about