How do I take a default replacement outfit and turn it into custom for sims 2?

For example, nrjsims has TF denim skirts that are Maxis mesh but are default only. If I want the skirts in custom version how do I do the conversion? Thank you.

Is there a Sims 2 hack that lets glasses, or makeup and other accessories be chosen per outfits the way hair is? I want my sims to automatically put their sunnies on when they're in their bathing suits ;)

So I downloaded some adult-to-teen clothing conversions that were texture linked (I think that's the term?) -- basically, you need the adult files for the teen ones to work. But in my game, though the adult clothes show up fine, the teen ones just show up as naked bodies. I have the adult files, so...what's going on?

There used to be this Sims 2 custom site that had a lot of elder clothes on it. I remember there being a lot of sweaters. I cannot for the life of me remember the name of it ( Read more... )

I'm very new to inteen and I've been looking all over for preg morphs for teen clothes, especially maxis clothes like underwear and swim suits etc. Are they out there? Is it just that my Google-fu is so very terrible?
TIA for any help