-d doesn't work that way. You're either going to have to manually grobble through the list of files in the containing directory (using opendir and readdir), or possibly use glob instead of a regular expression.

(And please use proper <code></code> tags and lose the angry fruit salad coloring.)

Update: And the angry fruit salad coloring tags were removed and there was much rejoicing. Just remember, the retinas you save could be your own . . .