Network write!

Hi,
I encounter a problem on network write. When I open a file (using
ZwCreateFile) on the network with read-write access and no buffering option,
I notice there is still paging io write to the file after the requested
no-buffering write operation. This means that the file is still cached even
though I requested no intermediate buffering. Is there a way to disable that
paging io write when I give no intermediate buffering option?

Thanks for any suggestion!

Regards,
Sin-Lam