AdcIn 1, W0
AdcIn 3, W1

The error says that ADCIN needs a variable.

Kay, I'm assuming that you have migrated to the PIC world from Basic Stamps and you may not have defined your variables - something you do not need to do in Stamps. So you need:

W0 var byte

to define W0 as a byte variable - these definitions usually go near the top of the page.