GateKeeper.. look in the Enhancements sub forum in the Dynaverse 2 section.. there is an all in 1 installer I made called the OP Enhancement Package which will bring your game to the most current level of community standard.. it includes the latest patch, all the game file fixes available, over 300 mission scripts, over 40 single player campaigns, Modding tools, OP +, fixed single player component files, etc... this package, though not used by all I would like, will put your game into GSA/Dynaverse/Single player readiness in one shot.. only certain fun Dynaverse servers require installers, and those are usually Serious Campaigns..
If you are on Dial-up, you can still play on the Dynaverse, you just should not initiate the mission if you are in a hex with another player.. the other player should launch the mission..
Same goes for Gamespy Arcade.. you can play there, but not host the missions... But you can join in with any one else hosting.
Hope that this helps.
P.S. Everything in the OP Enhancement Package can be utilized in single player mode as well.. plus you have multiple options with the Enhancement Package.. such as Mod Chooser.. it holds Taldren Original and OP + plus up to 3 more Mods without need to have multiple copies of the game on your system...