Linking two networks to intranet

[The-One]

Hi All
We recently got the VIP accounting package and we have an intranet server which is the web based front end and works great on our side
Here is the problem I have, we have a company next door which also has to connect to that web based front end and they are on a different network than ours.
Would it work to put a second network card in the server and assigning it a static ip address?
And they can use that ip on their side to access the web server?
If Not HOW?
Thanks in Advance

 

[skydog]

Yip that could work I think
just give it an IP on the next door companies network and block all ports on the firewall except port 80 and only allow from that IP range.... can windows firewall do that?

 

[supersunbird]

Windows firewall cant to nothing...