If you're running a 32-bit Windows XP machine and would like to significantly improve the performance of Fallen Enchantress (and probably other games as well) you can configure it to see more memory than the default 2GB.

Here's how:

http://www.gidhome.com/gid3gb/index.html

Specifically:

Configuring MS Windows XP: add the flag /3GB to the Boot.ini file. To do this just open the Control panel, click on the System icon, on the Advanced options panel, then press the Configuration button of the Start and recuperation section. In this window click on the Edit button inside the System start section and the Notepad will pop-up with the Boot.ini file opened. In this file there should be a line like this:

Before:

multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect

just add the /3GB flag at the end, like:

After:

multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /3GB

Now save file and reboot