been reading in the forums alot about adding wieght or brass collars ossry ima newbe i have no idea what this stuff is.  also alot of what i consider very heavy heads 200+ grains im assuming my 125 grain heads arent going to get the job done?

Scroll down this page here and you'll see a bunch of pics of various items all designed to add weight.

 "Points and More" at Braveheart Archery  

There is nothing wrong with your 125 grain points.  Carbon arrows in particular are very receptive to "point loading" which has advantages when you are trying to reduce spine or increase overall arrow weight.  Point heavy arrows also tend to penetrate better as long as they are properly tuned.

The weight forward thing is an interesting experiment.  You can do that if you want to play archery a bit.  If you are new and just want to get better at shooting-and if your shooting isn't up to par-experiments won't go well for you-stay with the standard.  125 have graced more arrows than most anything else here in the last 30 years or so.  Good enoguh for F Bear, probably good enough for me.  I have been shooting for over 50 years and 125's have been on most of my cedars...

Depends on how you want to add weight.  If your arrows are too stiff, you can switch heads and spend tons, or get new inserts.
If you are looking to up your total arrow weight, you can use weight tubes, rope, some have used flour and all sorts of other stuff.
I like the rope and have started using weight tubes.  Haven't gotten to shoot them much though.  Too dang cold.