Include path update_rubygems

in my host cpanel, i trying to update my rubygems, but there is the
following message >>

You will need to add /home/querub/ruby/gems to the include path. You can
do this by adding the following code to your script:

where do i add this code??? where do i find the file to do so?

ive already tried to update trough ssh to rubygem 1.3.1, ive also
tried many other ways, but dont have the root user.
I think i need to redirect my rubygems path to make it work.