Yup, all games are ok to play online.. Thats
Precisley why we have high speed internet
I'm not sure what you mean, When you say "Ive been offered the following types of Connections".. But, im pretty sure you can join an online Half Life game via Gamespy, Which can be found
Here.
Any other problems, dont heisitate to ask
By the way, Welcome to
nthellworld