Win 98 - 2 Gateways

I am somewhat over my head and need some help.

I have a coporate WAN, frame relay using a Cisco 2600. The IP of the Cisco
is 128.53.1.254 (the gateway to the corp.WAN), subnet 255.255.0.0

Also the a T1 interent circuit, using a Netopia 5300. Ip 128.53.1.122,
subnet 255.255.0.0.

The WAN line just got upgraded and the router changed from a Cisco 1000 to
the 2600. All worked fine before the change.

I have work stations (Win 98) set to the 128.53.1.122 as the gateway and
IRIP Listener installed. The Cisco 1000 did make RIP braodcastsanmd all
worked fine. But after the change to the Cisco 2600, I have lost the Corp
WAN access. The home office did tell me that RIP was enabled on the 2600.

I have no access to the Cisco 2600 and I can't do any configuration. (The
home office isnt aware of the internet T1 here). I can make changes to the
Netopia. The Netopia is set to NAT also.

I thought that I could use the "add route" command and add a route to each
PC, but I do not have a good understanding of it. And not really sure that
works anyways. Another thought was to enalble rip on the Netopia, rather
not, but if thats the only choice, ok. (dont want to give away the fact that
i have it).