[Agua]

I'm assuming you have photoshop, but if you don't and anyone else out there wants a free alternative, try GIMP. It's an open source photoshop. You would still have to change them one at a time, though.

Sourceforge.net is a great site for open source programs. I've found a lot of file conversion apps there.

This search:

http://sourceforge.net/search/?type_of_s...rt+tga+jpg

led to this:

http://sourceforge.net/projects/imgbconvert/

I didn't look any further into it, but dig around on sourceforge and see what you find.

You can find windows, mac, and linux-based downloads here.