here's a basic windows image re-sizer.
only use it if you have windows xp. it don't work with vista or 7.
download this utility. this is right from my site.
http://www.gteck.net/ImageResizerPowertoySetup.exeinstall it.
next, find the image file that you want to resize and right click on it, a menu with options will open.
you'll see an option that says "resize pictures" , click on that.
when the resize pictures box opens, click the radio button next to the size of the picture that you want, then click on ok,
it will automatically make a copy of the original to the size you chose.
piece of cake !
