The musical event kicks off in March at 17 Harrah's casinos in the US and Canada, with weekly Rock Band competitions offering up various prizes. Come April, four regional contests will take place, with the most talented group receiving $10,000 and the opportunity to open for The B-52s in Atlantic City. Registration details and a list of participating casinos can be viewed here.
Note that no Harrah's Rock Band competition band of any talent level will match the musical prowess that was Robin and the Stiqers or the E3 '08 Joystiq Band. Just be glad that team Joystiq isn't entering the casino rock-off.