OBDC connection Vista 64

Hello everybody, I'm trying to connect my access database with IIS 7 via OBDC
on windows vista 64, but I didn't succeed. My old asp code cannot find the
dns connection. I created the dns connection using the workaround of
c:\windows\sysWOW64 but It doesn't seem to appear for IIS 7. I've searched
the Internet and it seems it is a bug of vista 64 bits. Is there a solution?
I cannot move my database to sql server because it is also shared with an old
visual basic application.

Thank you,
Pascual.