how to restrict downloads

[trigger]

i share an internet connection thru hub.the connection restricts monthly downloads(1 GB).
can somehow downloads can be restricted during browsing?
also is there some way thru which records cud be maintained of how much downloading was performed thru a particular pc(particular ip)?

thanx in advance!

[hack expert]

while u surf the net u cannot restict downloads as when u surf webpages u download smaall quantities of data and u cannnot restrict that however there is a setting in internet explorer which might help
somebody please correct me if i am wrong and elaborate the right details

[Choto Cheeta]

for network u can limit the bandwidth from the internet getway through Clint IP address...

http://www.softperfect.com/products/bandwidth/

for clint u can make the IE not to download files...

http://windows.about.com/library/tips/bltip614.htm