How do I safely turn mods off in Tekkit?

[Triple_T]

Hey everyone, another horribly redundant post I'm sure (apologize in advance). I'm looking for how to safely turn off mods on my Tekkit server while keeping the game stable clean and most of all, playable throughout the months if not years I'll be hosting this particular world. I notice there's folders where each individual mod can be found, but being unsure of this route seeing as there are many folders and files belonging to these mods such as "Forestry" I was wondering if there's a safe albeit obvious alternative way of simply turning these off.

Thanks in Advance!

[Chezzik]

I've never actually run a Tekkit server myself, but I've seen this question come up many times. I think you edit something called "tekkit.conf", or similar. Each mod will be listed. Change the "=on" into "=off" for the mods you want to turn off.

[Triple_T]

I found a file called modloader.cfg with the options you describe, I hope thats it.

Thanks for the info

However will turning these off still be a problem in the future pertaining to compatibility with future updates both minecraft and tekkit?

[doubledtx]

I am trying to turn off specific mods as well. For example, I turned off NEI in the modloader.cfg file for the server and when I try to log into the server, the client immediately crashes (Can provide the error log if necessary.) Tried turning it off client side too and got the same problem. Turned them both back on and I can log in no problem.

edit: Sorry spoke too soon, I figured out what I needed to do to fix my issue