So if anyone is interested?
You can convert a MIG welder to TIG, I converted a DC MIG Lincoln MIG 140 to use DC TIG. All the parts are on line and I did it for just over $200 cad. So if your into big savings and can't afford a AC/DC tig like me this is an option, and DC TIG welds copper just fine, if your super cheap like me you'll even strip electrical wire for filler rod. I would say you can convert any MIG to TIG, your duty cycle might be an issue on some models like mine but it does a great job. One note to mention, it will be a "scratch start" rig so will gain yet another skill, it will open up your welding of different materials 10 fold and super clean welds too, and yes at first they will look like dog shit, mine were. :D
I should be able to whip out a few pictures if anyone is interested, might even attempt a video if I get balsey enough.
cheers,TL