my connection times out

[Sy]

my internet connection times out after 10 min i tried to
set the advanced settings and it works for the time im on
line but resets every time i shut down the computer HELP
is there any way to make it keep the new settings????????
earth link said its a windows problem......
every time i get on and try to down load something it
times out.... unless i remember to reset it each time i
get on the computer...