<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">I lost the pict.of the 5er&truck on the signature. </div></BLOCKQUOTE>
There's a picture of 5th wheel, a truck, and what appears to be a cargo trailer parked behind the 5th wheel in your signature. If this is the picture you're referring to click here
and it should appear.
Then right click on it to open an option box. From the box, left click on "Save Picture as....", then click on the "Save" tab. That should get it back on your hard drive.
If it's another picture you lost you may need to elaborate a little more so I can understand what happened.