Severance came with nglide configurator, but that version is 1.00 and i want to remove it and update to 1.05. There is no separate uninstaller created for nglide during Severance installation so the alternative way, would be to manually delete nglide relative files from game's folder, but the questions are.....which ones?would this cause errors?would i be able to run the game using the recent nglide?

So, no reply in mail from support and no reply here either. I think I gave too much time to verify that I will not have any support as customer when I need it.

You have to delete seven old files from Blade of Darkness\Bin\ : 3DfxSpl.dll, 3DfxSpl2.dll, 3DfxSpl3.dll, glide.dll, glide2x.dll, glide3x.dll and nglide_config.exe. By default an updated nGlide 1.05 (the same 7 new files) is installed to Windows\SysWOW64 (if you are using Windows 7 64-bit). I think you don't need to copy these files to the game's bin folder, just leave as is. You can configure nGlide settings via new nglide_config.exe (make a link to it on your desktop).
Have a nice day :)