MN510 connection

9 times out of 10 when I start my computer I don't get a
connection to my wireless network or the internet. I
usually have to open the microsoft broadband utility, then
unplug and replug in my MN510 usb plug. the connection
will then happen. Occasionally I have to reconnect it more
than once to connect. Any Ideas ho to avoid this. I'm the
only one in my house that can get a connection, so the
wifee and kids can't always get onto the internet if I'm
not home.