Image resizing software

Does anyone know of any image resizing software that will batch re size pictures to popular screen resolutions.

I know there are tons of image re sizing programs out there but I work with desktop wallpapers for all sorts of different screen resolutions and right at the moment I am doing this in Photoshop, one picture and one resolution at a time. What I am looking for is an image re sizing program that I can load a picture into and have it spit out the same picture in multiple resolutions.

I would prefer something that is free or in the worst case a fully functional trial for testing.

Thanks in advance

I have downloaded it and it looks like it might work, although just glancing at it I do not see any settings for today's higher screen resolutions, unless you increase size by percentage which then will have to imported to Photoshop anyway and cropped to the correct resolution.

Actually, what I was looking for was something I could import one picture into and select multiple resolutions for output, I've been looking and I don't think any such thing is available. I would be a great tool if someone could come up with something like that.