batch wallpapers (800x600, 1024x768, 1152x864, etc...)

I like making wallpapers with Adobe Photoshop. (http://www.matthewdoucette.com/wallpapers/) I would make more, but it takes too long to produce all of the different popular sizes. Is there a way (a simple way) to have Adobe Photoshop batch produce all the wallpaper sizes (and name them accordingly)? Then, if I ever make the slightest change in my wallpaper, I don't have to go through the arduous task of reproducing all the wallpaper sizes again.

Also, is it possible to have certain things, like pixel perfect fonts, to remain the same size regardless of the output image size? I hope you follow that. In other words, if I have a font that is pixel-perfect, that I do not want scaled, can I have it remain that same exact absolute size for each wallpaper size?

Thanks for any input!

You could try recording the actions (sizings) of the wallpapers.
Don't know how you can bypass the font resize.

Another problem I just thought of is when you resize the image (with all layers intact, i.e. non-flattened) then certain things like the distance of the font shadow remain the same. So a 1600x1200 images resized to 800x600 now has a font shadow that is twice as far away.

This means the resizing mush be done after the layers are rasterized and flattened... but this creates another problem:

Once the layers are 'rendered', sort of speak, then certain 'infinite precision' objects like text no longer have that precision. This can create slight artificats when resizing from one size to another that is close to the original size.

This problem is solved by "Scalling effects" of the layer(s) needed. (Ex: Right click on the effects icon of the layer, select Scale effects and then 50% or whatever you need.)

Thanks for the solution. However, I would have to scale the effects of every layer, and then do all of that for every resolutioo resize, right? That would be a lot of work!