Yes you can manually do them in phpmyadmin. Everything installs fine on your server its just with your hosts sql query limitation of 50000 query limit a day or whatever it is that zipcode thing will stop your mysql server for at least 10-15 minutes. There are a couple hosts that sell these cheap hosting plans like powweb.com and ipowerweb.com that do this to clients.
If you remove the zipcode you should install fine. The zipcode database provides distance to things.