Sorry for the Noobish question!

[Black Xavier]

How do you add a picture in the signature?

[Metalcat]

if its already on a webside then use url-for-the-picture

[Black Xavier]

thx :D what if i have it on the PC?

[Moe]

Then you need a place to host it. You can try imageshack for example. If it's below 250k (as it should be, there is a limit on the size of your sig pics anyhow) you can host it on hosting.hwcommunity.com