Those who don't know about it, The GIMP is a free program that was written for Linux and has been ported over to the PC.
It's not quite as powerful as the current PhotoShop, but it's a very powerful program.
The down side is that it doesn't have a CYMK mode for editing, but you can dump a image into CYMK files.
The last version or two of Photoshop added some features which The GIMP doesn't have yet.
As for filters, it won't use any of the Plug-in filters for Photoshop (they are actually executables), but there is supposed to be some filters/plug-ins that it can use, they are simply just Matrixies or something... I'd have to look it up to be sure of the name/type.
You can find it at
http://www.gimp.org three you can find out about The GIMP and if you scroll down it has a link for the Windows port.
One think that GIMP has that I don't think Photoshop does, is a scripting language that can be programmed (and many filters, etc. are already programmed that way). I used to subscribe to a Yahoo Group that convered development for the scripting language (I haven't programmed it myself, but it was a good way to get newly developing scripts).
It does have tablet support (kinda wish I had one, bet I could do more with it), but supports a mouse well enough (tablet support is for the preasure-sensitive stuff).
As a bonus, I think it will automatically gzip files for you as well (common thing in Linux I guess).
PHIL