What are some good resources for getting an Innosetup script written?

What I need to do is install an EXE, maybe a library or two, the VFP runtimes. That's about it. However, I have a DATA folder that needs to be on the CD separately (not compiled into the setup program). It is placed on the CD separately by my client right before distribution so that the latest data is available. Then it is just copied to the app folder at installation ("Program Files\CompanyName\AppName\Data" - though it will be actually be another place to avoid issues with Vista not letting you write to files in the Program Files folder).

The script should not be too complex. I just need to get over some of the basic hurdles and I need to figure out how to handle the DATA folder so that it's not compiled into the setup program.

Thanks,

Russell Campbell