Hello. i want to connect to places together through PPTP VPN, the attached figure below illustrates the scenario. the two offices have the same range of IPs ex (192.168.20.x/24) so the vpn connection between both offices should be direct i.e. no routing because both places are on the same subnet.
can anybody help me with the configuration

Maybe this will help you

http://wiki.mikrotik.com/wiki/Manual:Interface/EoIP

thanks for your reply but as said " EoIP tunnel may run over IPIP tunnel, PPTP tunnel".
so i need first to establish site to site PPTP vpn between the two sites, and here i need the help.