I presume you mean the link didn't work.
http://www.starshipmodeler.com/challenge/beercan/beercan.htm
Here's the easy way to do it (Windows, anyway):
On the page you want to link to, click in the address area of your browser and highlight the entire address. Sometimes you may need to click rapidly a few times.
Click the right mouse button so that a menu pops up. Point at "Copy" and click the left mouse button.
Start the message you want to put the link in. Hit <Enter> a few times, then aim at the message box and click the right button. Select "Paste" and hit the left button.
Not fancy, but it works.