RDS gateway and OWA with IIS redirection issue

Hello,

i am running server 2008 R2 RDS gateway and Exchange 2010 with OWA on the same server.

For /owa redirection we configured to HTTP redirect the default website to /owa

After doing this RDS gateway isn`t working anymore.

What need to be changed in IIS so that

1) the default website redirect to /owa

2) RDS gateway is working

Is there a need to change a sub-website? Which one?

Thx