Put " " around the link.
Oh, that's a link to your hard drive anyway. That's not gonna work. You gotta upload it as an attachment first.
Edit:
Heres a step by step.
In the advanced post reply or edit post page, click manage attachments button below the typing window.
Click browse. Then browse for your picture. Then upload it. Click close this window when done.
Then, either drag the link that should now be above manage attachments button up to the box or click on it to go to the page, copy the address then go back to previous page and paste the address in window. Simpler to drag and drop. It adds the name of the file you may want to delete.
Then, do the img src thing, don't forget to enclose the link in quotation marks.
Voila.
This is from an offline server. You won't be able to get yours to do this because of the html restrictions in here. Sorry.
Heh, crap, you're not going to be able to use the img src tag in here. Forgot, html code is turned off in About the members, so just drag and drop the link to the window and it should turn into an url. People will just have to click on it to see you.
http://www.sciforums.com/attachment.php?attachmentid=3056&stc=1
Hmmm. Seems you may have to manually add the [ url][ /url] with no spaces at beginning and end. Weird. It should do it automatically. I also used [ center][ /center] tags too. Just for aesthetics. And, you may want to make sure you edit your post up there. It's got your name in it. I know your name.
Don't worry, as I said earlier. I'm no weirdo.
Just bored.