No worries. Free advice is what the InterWorf is for.

Here's one: http://www.universalcycles.com/shopp...&category=4158

According to BikePedia, you need a 1 1/8" threadless version:
http://www.bikepedia.com/QuickBike/B...e#.USGLovIp-7Q

Note that Dimension is a brand imported by Quality Bicycle Products and sold through many retail and online locations. I bet one of you LBS's has an account with QBP and can order the fork for you, which might work to your advantage. Bike shops can get a little snippy when customers walk in with random parts bought online.

FWIW: I just did roughly the same conversion to my mountain bike. Since I'm not hitting bumps hard enough to make a suspension fork worth it, I de-suspended it to lose the weight and height of the suspension.