Use DirectoryInfo to read network drive

[Ian]

I am having trouble to use DirectoryInfo to read info from
a network drive. I got "bad user name or bad password"
error when I using unc(\\server\folder\) to reference my
directory. Then I try to create a virtual directory on
IISS which map to my network directory and I got "path not
found". So how can I solve this issue?

here is my setting:
Server1 - standalone server and logon with local account
(abc) with admin access right. I need to read all the
file name on a directory of this machine
Server2 - standalone server and logon with local account
(abc and same password as server1) with admin access right.
IIS and ASP.net are run on this machine.

thanks,
Ian