How to connect Remote web server by windows and vice versa?

Following are my application details.

Project A ---- Asp.Net ---------------Sql server 2005(database name:db1)
Project B ---- Visual Basic ---------------Sql Server 2000(database name:db2)

for example i am saving a record x in db1, at the same time i have to save it in db2 also similarly, i am saving a record y in db2, at the same time i have to save it in db1 also.

1 is windows and another one is web application.
how can i make it possible?
plz help me.
Thanx in advance
With cheers
Nirmal.