If you're building ASP files to connect to databases other than SQL Server or Access, you'll need either an ODBC driver or an OLE DB provider. For a master list of all the available OLE DB providers, check out this site at Microsoft:
<a href="http://www.microsoft.com/data/partners/products.htm"> http://www.microsoft.com/data/partners/products.htm</a>
Nearly every database on the market has a third-party OLE DB provider available for it, and all the products that Microsoft is aware of are listed on this web site.