Batteries and motors need to be approved by the BRCA, a list of legal motors can be found on the electric baord section of the BRCA website as can both the 2007 and 2008 list of legal batteries. You can use any batteries from this list for regionals but only 2008 for nationals (which you dont need to worry about).
HTH
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Canon 40D (350D backup) - EF-S 18-55 - EF-S 17-85 - EF 100-300 - EF 50 - Canon 430 EX || Speedlite - Canon BG-E2N Grip
Adobe Photoshop CS4 Extended
AX-10 Crawler - Thats all I have left!!!