HOW TO CONNECT BW SERVER WITH R3

HI ALL BASIS GURUS,

I have 2 BW servers(DEV and PRD) and i have 1 R3 server with ECC5 and Oracle as the DB,

now i want to establish a RFC connection between the R3 server and both the servers.

Also there is no R3 running on the BWDEV server.

Can anyone help me with this

Thanks in advance