Hi First post and I hope this is not too basic.
I have a 300D and a 40D. Could anyone help me with the recommended Shutter Speed and I S O settings in manual mode using off camera studio flash triggered with wireless release.

Light meter is a Sekonic L-308BII.

Can't seem to find this information on Canon's website or in the owner's manuals.

I didn't seem to have too many problems with my old 50E but digital requires a mental shift I'm having problems with.

Thanks in advance