So I was browsing through my old stuff,found flash cs3 and I obviously installed.Was finna animate with it,so I found out the brush sizes are very small,is there anything I could use/do to add larger brushes?maybe extensions...my flash 8 has errors so I'm using cs3 atm,till I download another flash 8.

Try zooming in.

the brush size will shrink when you zoom in, and will grow when you zoom out

Yeah...I see,though I usually animate on zoom 200..I guess I should go for 800 lol