Hi,
The following links show howto disable read & write caching as well as oplocking.

1. Oplocking & read caching http://www.dataaccess.com/whitepapers/opportunlockingreadcaching.html
2. Disable write caching http://support.microsoft.com/default.aspx?scid=kb;en-us;324805

>> Is read/write caching disabled on the workstation.?
>
>Do you know where I can go to verify that?