None. They have nor won or played in one.
none!
Cowboys and Texans
As of the end of the 2010 season the Texans have won 0 Superbowls. They have never been in the playoffs.
6 Super Bowls
They have gone to 6 super bowls
they have been to 3 super bowls
The Redskins won 3 super bowls
he has appeared in 4 Super Bowls
The Raiders have won three Super Bowls.
Joe Montana won four Super bowls
3, Super Bowls 36,38, and 39
Two ... Super Bowls XXI and XXII (both losses) and Super Bowls XXXII and XXXIII (both wins).