Creating a VPN tunnel (router to Router) using RV042

Hello!
I purchased two Linksys RV042 that is capable of creating gateway to gateway connection so I can fuse our two offices and use the Software's on our server. The Tunnel is connected but we can't use the software.
Is it due to my two routers network address of 192.168.1.0? or Something else?
Help is highly appreciated.
Thanks TechyV!
