Heh, the I:SB has a large number of threads that catalogue every argument for, and against, the theory that you're likely to see.
However,
TalkOrigins Archive: Exploring the Creation/Evolution Controversy has every argument made for, and, as always, against, evolution that I know of.
Although the website itself is pro-evolution (it refutes every argument against it), you can probably find some arguments there to use if you're anti, provided you don't mind ignoring the rebuttals it provides.