How to prevent my browser from caching replies from Squid?

Dear list:

I am running SQUID 2.6.STABLE5-NT.

I have a "refresh_pattern" like:

refresh_pattern ^http://*.*.\MyApp 1000 100% 10000

everything works fine as expected (HITs and MISSs), however I am unable
to prevent my browser from caching replies from Squid. If I kill my
browser and use MyApp again, I get a response from the Squid instead of
my browser cache. How do I fix this?

I have the "ie_refresh" on, any help will be appreciated.

Thanks.
Bob