Using YUM as non-root user

Ok, this is an unusual use of yum, so please read the entire thing 
before replying that you have to be root.

I have a set up where I use RPM as a non-privileged user to deliver 
custom non-os packages. This setup works great, but I have to manually 
deliver update and new RPMs to this setup. I am curious if I can make 
YUM run as a non-root user with all the yum files and configurations 
located in non-standard places and deliver these RPMs to this location 
automatically. Assume that underlying RPM works fine in this 
configuration (which, like I said, it does with a few command line 
params and a custom config file)

Thanks.

-Michael