OT: A tool to make watermarks into pictures

[Ragnarok-X]

My pictures are constantly being stolen from me over at ebay. I need a tool or plugin for PS to create a watermark (i.e. my ebay-nick) on top of the picture ?
Any ideas ?

thanks a bunch.

[Aiken]

Create a transparent layer on top of others, paste your sig template on it, then merge layers.

[Ragnarok-X]

Got it, thanks. Should have thougth about that myself lol.