I Have shiny fast 8Mbit connection plus a 3Mbit just for a laugh and i cant be assed either, not because its that big on my connection speed, just cant be bothered. Plus i would never download an executable.
I unlike the average consumer
am not scared of virus or spyware/adware as i make sure i dont have anything on my machine that important at any one time, but i still cant be assed to fix knackered machines all the time.
A little tip for you, why do you not make a self updating package. a lot more peopel will probably download it if it is 1 or 2mb in size, then get it to connect for updates after its finished. Also the live update feature will help you improve things and update peoples machines in the future as well.
Seperately 60mb is too much for an application, what the hell are you running? a whole operating system fits on a 700mb disc, you cant be offering as much functions as 10th of an operating system, ok its about 600mb archived so why dont you learn a little more about compression technology as well?
Hope thats food for thought, but it sounds like your already ready to go with your ideas already. Take a step back while you at this stage, its too big, no one on the net asks you to download 60mb for toolbars, plugins and other things, sure its accepted 60mb is normal for small videos and things, so what, thats a video!