using both data report and crystal report in one project...

hello... i just wanna ask if it's
ok to use data report and crystal report
at the same time... i mean, is using both
crystal report and data report at the
same project a NO NO?
does it cause any problem?

and, can anybody give me sites where
i can be guided on how to get started
with CR9...

i'm using vb6...
thanks!

anybody pls... i really need it badly...
i have tried googling this out... but
i really cant find a definite site for my probs...