I'm using Reliance Broadband 300 Unlimited Plan for the past few month's.

I'm having some problem with my connection which started few week's back.

Whenever i restart the PC or shutdown and open it again, Im not able to get the Reliance login page and the IP Address i get is 192.168.1.100. The actual Reliance IP Address start's with 123.236.XX.XX. And to get that IP address i have to Release the IP Address and Renew it again. Before whenever i restarted my pc of switched on the pc after a long shutdown break i used to get the reliance IP address. How will i be able to solve this problem?

And there are many wifi user over here.
So how to share the Billion 5200s to Linksys Wrt 300N?