ProxyPass and Alias

Hello,

It seems that reverse mappings have higher priority than aliases.

I have this setup:

Alias /home/help "c:/help"

ProxyPass /home http://my.host.com/
ProxyPassReverse /home http://my.host.com/

The alias is ignored, '/home/help' is mapped to remote 
'http://my.host.com/help' instead of aliased local directory.

I am running Apache 1.3.29 on Windows, is there anything I can do to fix 
this?

Thanks,

Gael