Sigh....

Only the third time THIS MONTH...

If you read the manual, or downloaded the manual (it's FREE!!!) if you don't have one, or SEARCHED the forum, you will have discovered that HIGH and LOW only work on a PIN and NOT on a PORT which is why you're only blinking ONE pin.

ooops... just noticed that's what sayzer just said... ah well, nothing like reenforcing the message....