Simple matter, it should look something like this:

Code:

[url=""website link you want to use goes here""][img]www.simviation.com/yabbuploads/""the picture you want to use"".jpg[/img][/url] 

I presume you want to link to the website already in your signature, I took the liberty of doing it for you, just quote this post and copy & paste it to your sig:



Hope this helps.