Regarding Database client supported by Express Edition

HEllo , Everyone , On my Desktop ,I have installed Express edition ( C# & Web Developer) with no Express edition of SQL-Server 2005 also dont have Sql- Server 2000 ,Instead I have Oracle 8i installed

When I use any data control e.g. Datagrid for connection with data base it is showing only two data base client one - for access & other for sql server

Can Any one please tell me how many clients are supported by Express version. Can I use Oracle 8i with Express Edition as Database.

Please reply

Thanks

abh_pat