As much as I am sure that Bush deserves to be impeached, the votes are not there. As long as the Republicans control both houses of Congress, nothing will happen. The Republicans in Congress are already facing multiple major scandels, an increasingly unpopular war and a President with sagging ratings. Short of major riots in multiple cities, they are not going to let impeachment even be talked about in Congress.
This may change after the 2006 election though, depending on how much the Democrats pick up or fail to pickup. If the Democrats can get either house they may be able to convince enough moderate Republicans to get a full investigation or even impeachment hearings. And the blatency of the illegal actions is such that if an investigation is opened, it just becomes a question of who takes the fall.
Jay