Doom, is compatible with XP, as long as you run it with one of the newer ports such as JDoom, or Doom Legacy avaidable here


<a href="http://cjworld.webexperts.net/files/jdoom/jDoom10_full.zip" target="_blank">JDoom (Full Install)</a>
<a href="ftp://[email protected]/jdoom/jDoom110.zip" target="_blank">JDoom Patch 1.0 - 1.1 (unzip this over the top of original install)</a>
<a href="ftp://[email protected]/jdoom/jDoom111.exe" target="_blank">Patch 1.1 - 1.11</a>


<a href="http://prdownloads.sourceforge.net/doomlegacy/legacy_132beta4_win32.zip" target="_blank">Doom Legacy 1.32 Beta 4</a>

Good Luck.