If you go to the cards page and scroll down to the 'collection' section you will see a checkbox with a down arrow next to it. Click the down arrow and you will see an option to "Add to Wantlist". Select that option to add the card to your want list. In your profile you can opt in to "Match Alerts". WIth match alerts on and the card on your want list, you will get an email when someone adds one that is for sale or trade.
-Tom
Ted Musgrave card collection 98.9% Complete: Cards Known: 1013, Cards Owned: 1002
I prefer the company of people who disagree with me for the right reasons over the company of those who agree with me for the wrong reasons.