A new version of CABInstl is out, my favorite tool to install .CAB files. From the description: This program is an installer for CAB files and allows to install PPC programs into the specified folder instead of that by default created by the standard installer. If the folder is not specified, installation will be made into the default folder. If the developer of the program being installed has firmly set the allocation of files in a CAB file - it will be used during the installation.
The new version 1.04 can be downloaded from here:
http://www.s-k-tools.com/fp/viewtopic.php?t=44