The_Rebelboy

Hope I can ask this correct where one of you understand. Last week when I would open my project table, I had a search bar where I could look for different items and then I could also see what it took to make that item. Well now I can't see that. Not sure if Ihit something in settings or not. Any help would be great.

I have been playing Tekkit for some time now and I am thinking of starting a server. My question is this. If I build a world in Single player, then start my own server, can I then use that world map for a multi player server?