In reply to:
I changed the server path using the CP. I changed the path from dev.neighborhoodschools.net to devneighborhoodschoolsnet
Well, that would get rid of the "dots", but I don't really think that would solve then problem, and shouldn't be necessary. If the script really can't handle "." in a path, then I'd get in contact with the script author and get that addressed. 
In reply to:
my db name is membership
localhost is membership.dev.neighborhoodschools.net (am i supposed to change this to...i don't know how)
As Patricktan pointed out, you probably shouldn't publish that information. That said, you should not need to change your host name - it is in commonly acceptable form as it is.
In reply to:
i reran script and this is the error message...
Warning: mysql_connect() [function.mysql-connect]: Unknown MySQL server host 'membershipdevneighborhoodschoolsnet' (1) in /home/.fay/chunky/devneighborhoodschoolsnet/members/config.php on line 3 ... (etc)
That obviously made it worse; when yousay you "reran the script" did you "re-install it", or rerun the *install* script, or just rerun the main script itself? If you changed the path, and the host info, you would need to either reinstall the script or change the appropriate configuration files.
If it were me, I'd "clear everything out" and start over.
--rlparker