Rooting Galaxy S2 - A Dummies Guide, posts #1 and #2 have been re-written to include the following:-
Updated for Android 4.0.4.
Updated some links for clarity and removed others.
Explanation of how to get into Download and Recovery modes, with videos, in post #2.
Added, in post #2, how to wipe cache partition and dalvik cache in case of problems re-booting after rooting.
General tidy up for clarity.
ironass motto... "Flash in haste... repent at leisure"