http://www.imageresizer.com/
Thats what i use... you also have the ability to select all of the pictures in a folder and resize them in 1 batch... it's free, fast and best of all free...
the only thing is on the right hand side you will have to select the format of the picture(s) bmp, jpg, gif, ect..... then using the slider make it to the size you want... easy! and best of all it's free!... and no spyware which is another huge bonus.....