The top one. Also instead of double posting just edit your previous post. As for your previous question you could always download the PS CS2 trial version over at www.adobe.com.
Which one is better?
Or the current one in my sig?
If you don't have the money for Photoshop try using the Gimp.
It's a lot like photshop, though to be honest I don't have much experience with it as I've always had Photoshop.
~Well, it's been the ruin of many a poor boy and God, I know I'm one ~
The best way to become good at making sigs is to just experiment. Tutorials help, but doesn't compare to trial and error.