Fallout Who is a group of releases, which work with Fallout, with many features including the TARDIS, Weird and wonderfull places to visit and Just plain old fun.
If you can get it to work it's an excellent mod! My only complaint is...
that it doesn't change the ending if you have spare regenerations and chose the option that normally does kill you at the end.
otherwise it's one of the best mods for a doctor who fan.