Problems Accessing SQL After Going From SQL 2000 To Mgmt Studio SQL 2005

I installed Mgmt Studio and SQL 2005 on a new server - I imported my complete old SQL 2000 databases - then shut down my Original SQL 2000 server and used that Idenitical IP as the Mgmt Studio SQL 2005's IP

I am using Linux Jakarta Tomcat v5.0.27 and all SQL references are referring only to the IP number of ther server and not using DNS -

Originally I was getting an error when my system tried to access the SQL stating that it was an untrusted connection - I then realized that the IP number referred to was not the primary IP and I changed that so the it was.

Both the Linux and SQL 2005 are now using network IPs and then I got a message that the password that I was using was not strong enough so I changed that as well - then all my logging dissappeared

When I try to connect now there is no indication in any log (SQL nor Windows) that I am attempting to connect - the website just hangs for like 3 minutes and fails the login stating that the username/password is incorrect (or it could not verify it) even though I changed nothing on the Tomcat side and it was logging before the IP werent matching.

Is there a significance difference between SQL 2000 and SQL 2005 that will not allow my Tomcat to connect?

Few Addl Notes
I can ping to and from each server
I can telnet from Linux to SQL 2005
Linux of course is not part of my Windows 2003 Domain but it is on the same network

Any and all help would be greatly appreciated