Nconvert script for entire folder

[thomdroz]

I am looking for a script that will take all files in a folder (they are all *.jpg in folder c:\test\)
and resize all files to 640x480 and change the dpi to 72, the names should be rewritten over the top of the current file, so after nconvert runs all the files in c:\test are the original name but all are now 640x480 @ 72 dpi.....

It sounds easy but i have had no luck in try to find any examples that do this.....

any help would be greatly appreciated!

Thanks in advance