Desperatly Need New Computer Parts

[Praetor]

Any case works as long as it's ATX Form Factor right? Not micro ATX?

Correct

Question about the core...(Venice). In your CPU 101 you had it listed at #2 for desirability among single core 939 socket users.
-The [512k] after Venice I assume is the L2 cache?
-Why is it listed #2 when one would think that a 1MB one would be faster, (i.e. Clawhammer ranked #4)?

Clawhammer is a much older chip SH7/CH7 rev, the Venice is a far newer (E4) chip. Speficially, the Venice is a smaller process (thus 2nd lowest temps and power consumption), has the most advanced memory controller and has SSE3