how i replace office mod_rewrite?

i'm perplexing have modrewrite manners skip office vip. i've attempted array things below, nonetheless avail.

# start wordpress
<ifmodule mod_rewrite.c>
rewriteengine on
rewritebase /
#rewriterule ^vip$ - [pt]
rewriterule ^vip/.$ - [pt]
#rewritecond %{request_uri} !/vip 
rewritecond %{request_filename} !-f
rewritecond %{request_filename} !-d
rewriterule . /index.php [l]
</ifmodule>
# finish wordpress

how i modrewrite wholly replace /vip/ office requests pass directly folder?

update:

as points clarity:

• it's hosted dreamhost


• the folders within wordpress directory


• the /vip/ folder contains webdav .htaccess etc (though i dont cruise important