Read the readme.txt and it'll work perfectly!
Only tested on WinXPSP1. They say the following
Release Title Monitors Dell M782, Driver, Multi OS, Multi Language, Multi System, v. 1.0, A01
Release Date 11/26/2001
Description Digitally signed M782 monitor driver. This driver has been signed to work with Windows 95, 98, Millennium, 2000 and XP. It includes the following files M782.INF, M782.ICM and M782.CAT
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