Take a look at this, you might be able to do it yourself:
www.sitepoint.com/watermark-images-php

If you're wanting a desktop app I'm your man. Use skype? artw1982 on skype..all i need is the image you want watermarked and where you want it.

You probably should revise what you are asking for, and then post your request where it belongs,
here
Wanted - Members Looking To Hire You

or look here
Warrior Forum Classified Ads

or here
Warrior Forum Warriors For Hire

I can help you do that, you can pm me with details or skype me on prince55l

Actually what types of help you need. Here I can help you if you need. You can contact with me through skype or PM me. My skype id is muzmmellimon