Create CSR for public CA for ADFS 3.0 with no IIS

Hello, I need to install ADFS 3.0 on a fresh 2012 R2 server with no other roles installed.  Before I start I need to create a CSR to request the UCC I just purchased from a public CA (VeriSign, Godaddy for example).  Since ADFS 3.0 doesn't use IIS, how do I create the CSR?  Should I create the CSR on a different computer that has IIS, or does it have to be done on the server which I'll be performing the ADFS install on?  And if on that server, what tool do I use to create it?

Thanks!