Simple problem with mod_proxy

Dear all,

I got a cookies problem with my apache. I use apache as a proxy to
re-direct
my http request to a iis server. all this is on the same server, a
Windows
2003 Server.

It look like my proxy stop the cookies. If go with the proxy my cookies
doen't work and directly on the iis port it work fine.

Thank you for your help,
Guillaume

my configuration is the following:

- Apache 1.3.34 on port 80
- IIS on port 9090
- Windows 2003

<VirtualHost 10.0.0.1:80>

ServerName foo.com
ServerAlias foo.com
ServerAdmin admin@foo.com
DocumentRoot C:/webroot/
DirectoryIndex index.html index.htm

ProxyRequests Off
ProxyPass / http://localhost:9090/
ProxyPassReverse / http://localhost:9090/

</VirtualHost>