Acouple of thngs here. First Orcle client software must be installed on the machine (If the DB was installed ther then client was also installed.). Next an entry in the TNSNames file must be made for the database. This can be con manually but I would not recommed this if you are not compltely fluent (please forgive my spelling), use then tools installed with the client installation (the net configuration assisant).

Next look at this the database section FAQ's for a post I made about Orqcle and VB (both 6 and .Net the thread is : http://www.vbforums.com/showthread.php?t=393457)

Next Look at post in thread http://www.vbforums.com/showthread.php?t=459103 Look at post number 18 I supplied a method for getting table information to you in that thead. I also sent you a PM about it.