Open the folder and inside is dplay.dll, then copy it and paste it in your DOOM folder. Example: C:\Program Files\DOOM Collector's Edition\Doom Show All
When you have Windows Vista, Doom says it can't find dplay.dll, Right? Well I found it you lucky vista users! Now you can play Doom for EVER!!!!! Change the resolution to 800x600 or 600x800 to get the color back. Have fun! Hide