I would honestly just think about investing in a new case...
What you could possibly do, is make a screen like door (with aluminum mesh). That you could cut to fit.
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--Soyo KT333 DRAGON Ultra (Platinum Edition)
--AMD 1.4 @ 1.54 (11x)
--768mb of PC2100 (@140FSB)
--Asus v8200 GeForce3 @ 210/490
--Maxtor 40gb Quiet + 2 IBM 40gb 60GXPs (removable) + 8gb WD
--Audigy
--Maze 3, DD Gf3 block, 2x BIX, Eheim1250
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