data mapping and migration

Has anyone used DTS packages for migrating old data to a new schema?

If so are there any tutorials on this?

I'd prefer not to do this by hand. ;-)Just use DTS graphic wizard.
BOL is the best tutorial|||Try the wizard in Enterprise Manager. That's a nice easy intro into it.|||I have a simple package where I want to dump data from one table to another. Its erroring out on this line.

DTSDestination("TaxExempt") =1

The destination field is int.

I don't receive any errors when i have the following:

DTSDestination("ShippingWeight") = DTSSource("weight")

for some reason it doesnt like the hardcoded value i supplied it.

Any ideas why?

Thanks for the help.