How to install new mods into a custom modpack on technic

[KazAnthony]

Hi Minecrafters:

 

I'm trying to install Single player commands and Worldedit into a custom modpack on Technic.

The pack is called JANKYnik's Classic Reborn (an updated version of Tekkit Classic for Minecraft 1.7.10).

 

The problem I have is SPC is not being recognized in the mods folder either as a zip file or as a normal folder.

 

Can somebody help me in finding a way to install these mods??? Please as I would like to build an adventure map.

 

Thanks for any info.