Had another idea/need for a tool, wonder what you guys think of this:
Every time your computer reboots, it searches for the mapped shared folders. This will slow down the boot process enormously, especially if the other computers are turned off. However, manually mounting shares is a pain. You are able to prevent this delay using my nany program. It will remember a list of network shares that get mapped to drive letters when the program is started, with an option to start this program at boot.
edit: I've just been told Windows 7 startup is not delayed anymore because of this.