maximapowr

I need help overlaping and combining four images into one picture. I was wondering how some you do this. Initially, I thought I could use photoshop, but I don't know it that well and I am having a hell of time trying to modify, resize, and combine all four of my pics so that I can make a cool sig. How do you do this with photoshop? Where can I host this image? I have my own website, but everything that I add to it must be in an html format having that extention on the url. I've noticed that only urls with a jpg extention will work in the signature area. Any help would be appreciated.

Thanks,
David C.