running Squid

[Jay Tarbox]

I'm having a problem getting Squid to run if there's anyone out there using
it.  I have it compiles and everything, but when I go to run it with the -z
for caching, I get an error that it can't create a subdirectory under the
cache dir - access is denied.  I get the same error when trying to run it
with out the option, I get access denied to a logfile that it is trying to
create.  How do I give a program - squid - rights to create directories and
files?