Hi! I dont know if this is the right place to post this....but can someone teach me something?

I have a picture (.jpg) of me, and another one of my Gf (.jpg too)...

Im a noob at photo editing, but i use Pain.NET once in a while to edit some pics a little...

Now heres the thing....How to merge two pictures in one pic....u know something kinda romantic...
Paint.NET is kinda similar to Photoshop i think, but should be more than enough to do this no?

Thks

Edit: I have also Photoshop CS2 if necessary...

You need to select a person off one of the pics and paste it as a new layer onto the other pic....then save it as a JPG.