I'd agree with the last comment, you need to figure out how much cash you are working with...
your two options are either: New Wheel, or New Rim/Spoke.
The holes in hub and rim MUST match, 32/32, 36/36 and so on. Spokes are to be cut to length at your LBS.
You also need to check the condition of the hub, if this is sealed bearing type, you are usually okay, if it's a loose ball/cup unit, best overhaul it first.
you don't want to lace the rim only to have to overhaul the hub two weeks later.

best of luck.