Finally found one the game modders once again come though, I can only do simple mods but others that really know the geck can do alot more
Here is a mod that lets you continue the game after you beaten it puts you in the lucky 38 casino after the credits have rolled
Get it here on http://www.newvegasnexus.com/downloads/file.php?id=34811

*I would highly suggest you keep a saved game of before you do the final battle like before you talk to the npc to go off to the damn on whatever faction/path you picked so when DLC comes off you dont break anything*

also some other cool mods on the nexus covered by pc gamer
http://www.pcgamer.com/2010/11/02/25-best-fallout-new-vegas-mods/

Only ones I like are the ed-e, the sandstorms, continue playing even at end of game, and the depth of field. Of course I am using a mod that lets me silence my gauss rifle"friend of mine did this one for me", and gives me a modded no factional ncr ranger combat armor with major bonus's and red glowing lenses on the helmet=)"aka the armor on the front cover"