This tweak requires regedit. Remember my CMA above, and proceed with caution.
- Run regedit by going to start | run | regedit.
- Navigate to the following key
HKEY_CURRENT_USER\Control Panel\Desktop - Find MenuShowDelay and change the value to 0.
You will need to restart your computer to see the change. I did this tweak almost immediately after installing XP, and don't regret it in the least. At any rate, this finishes up this tweak and this section.