A buddy of mine at work showed me this nifty registry addition for Windows that sped up my network connections significantly.
WARNING! Backup your registry before you perform this addition and if you don't know what you're doing, don't attempt this modification without the help of a friend or professional. Incorrectly modifying your registry can cause your system to become unusable.
Add the following this DWORD entry:
with a hexidecimal value of 400 to this registry hive: