Geocities does not allow remote linking, which is what you are trying to do here, believe.
I use www.worldzone.net as do quite a few folks here. There are others, but that is the one I use. It costs $12 per year for 100meb of space. You need to register for a site, upgrade to the $12 level (gives you 50 more meg, total of 100 and remote linking ability) and then ask the web folks to activate the linking ability.
It seems like many sites are doing away with the free (DIS is an example) as it is too costly to provide. I think paying the small fee helps, though certainly does not guarantee, that worldzone will be around in the future and provide linking also. JMO>