this helps me a lot. I figured this is how it worked since most server's on mine craft are like this! Just to make sure, is the server optic a on.ture.02? or is it an on.ture.01?

Because my computer can only run an 02 server since 01 is outdated by like 2 weeks, and I update the client.jar on minecraft about every week or so. Just a question, and i dont think you'll know unless your the developer. But I'm guessing it's still 01.

I'm still confused on the whole MC private server thing... so i need some help.

When i joined opticraft i registered (duh) and there is no play button...

OR is it like a certain type of RuneScape Private Server (GarrarScape)
where you download runescape itself, and log in with the ip garrarscape.no.ip and password (whatever password is)

so do i download mine craft and use Opticraft's IP address on the multi player menu where it says IP?

or am i missing the play button? Thanks