Change Preloader Animation Based On Internet Speed?

I think the title pretty much sums it up…

I have 4 animations and based on the speed of the internet i want it to change between each depending on the speed.

e.g…

0 - 10kb/ps - 1st MC
11 - 30kb/ps - 2nd MC
31 - 50kb/ps - 3rd MC
50+ - 4th MC

My idea is to have like a glass of water… and for the 1st MC the water filling it up is only a drip… and then 2nd MC is a slow stream of water etc etc and then final MC is water gushing in filling the cup up faster until it’s full…

I think this might be a bit hard for me… as i can’t even make a preloader… everytime i try the SWF file just stays blank until it’s fully loaded… haha… but i’ll read tutorials and stuff… i’m rather basic with Flash and just learn what i need to learn as i get to it… I also need the transition between each change (say from 1-10kbps - 51+) to be smooth rather than just having it going from a drip to gushing water… but i think i’ll just have to make animations for each and then IF statements to deal with that issue…

Any ideas for how to measure the speed???

Thanks

Jesse