If you want to change the location of the fslrdr folder to something besides the c:\ default, you'll need to dig out your registry tools. Randy Cook shows us which wire to cut.
Like all things in the Juice, this is not strictly supported, but appears to work fine.
After installation and before you create/import any packages, modify the setting: HKLM\SYSTEM\Altiris\FSL\DefaultFileRedirect.
Editor's note: Read this article for a cautionary note about moving the fslrdr location.