If you don't mind, you could help me with something else as well. You have the Steam release of Warband, and the installer for this doesn't seem to be able to properly detect the installation path for it, right?
Could you go to Steam's installation path (should be "C:\Program Files\Steam\"), and check in the "appcache" folder? Is there a "app_48700.vdf" file located in there? That should
be the pseudo-Registry file kept by Steam for Warband, I think.
If the "app_48700.vdf" file exists, could you zip it up and send me a copy of the file by uploading it to Mediafire, MegaUpload, Rapidshare, or some other free upload service?
You've already provided me with the default Steam installation path for Warband ("C:\Program Files\Steam\steamapps\common\mountblade warband"), which helps, but with the above info I should be able to make the Battle Size Changer installer detect the Steam release and locate it for people who installed to different locations. I can also use that info to update my separate general purpose mod installer script to make it work with Warband.