Romate SQL connection

hello Friends
i need help regurding code to connect MS SQL server 2000 through dail up connection
acutally what happening to me, i have one computer connected with in a network and getting access of MS Sql server 2000 ; connected and making transaction. now at the same moment i connect to another Server through dailup connection from the same computer ; and i it's also connected but the prob is that i cann't able to logon to MS SQL server 2000 of dailup server for transction, but stay connected of lan server. plz let me know what is the best way to connect the dailup server.
infact what i m doing, i make invoice from my computer to lan server and then that invoice i have to send to dailup connected server through my computer. and through my computer to Lan server i connect by using DSN.

Plz do help me regurding this matter. i m much worried about this. actually i m programmer

Thanks and looking forward