Quake - Skinning / Level Making?

[The Fifth Horseman]

I'm playing Quake again, and was wandering on the subject of skins and creating own levels. Could any of you recommend some good tools/tutorials on these subjects?

[_r.u.s.s.]

i know that "half-life model viewer" can open quake models 2, actually i can't remember where did i get t it... try google

[Kon-Tiki]

PolyEd (http://www.sonic.net/~mortlgrn/quake.html)
Some more (http://chuckr.bravepages.com/unreal.htm#Quake)