how to set symbol directory for visual C++

i have install the symbol for my system, it's under c:\winnt\symbols; but when i debug a program the following message still being showed.

Loaded 'D:\WINDOWS\system32\kernel32.dll', no matching symbolic information found

how to a set the symbol directory for visual c++ ? thanks.

What OS do you have ,I mean 2000 or NT or XP ?
you need to install correct symbols for your OS and even for service pack.Microsoft site has all this for download.IF you have windows 2000 with sp3 ,you need to download sybols for Windows 2000 + for SP3..