as promised here are some references for performing blocks.
What do you know, the military actually had some of the best articles on this!!
1) Thompson WL (CPT), Malchow RJ (LTC). Peripheral Nerve Blocks and Anesthesia of the Hand. Military Medicine June 2002;167

p478-482
2) Calkins MD (MAJ), et al. Pain Management in the Special Operations Environment: Regional Anesthetics. Military Medicine March 2001;166: pp211-216.
If you don't have access to this journal I would be happy to fax/send a copy to you. They have excellent descriptions of the "how to and with what" for all hand and digital blocks.
www.nda.ox.ac.uk/wfsa/html/u11/u1112_01.htm is a site for lower extremity block techniques
for teeth, lidocaine jelly/paste 2% or ambisol...just ask our dental friends on line
www.nyerrn.com/er/procedures.htm for good references on all kinds of issues
www.aorn.org/journal/homestudy/jan02a.pdf for an overview of nerve blocks (RN perspective)
hope this helps...having more than 1 way to treat everything should be everyones goal...
he who wins , in medicine, has the most techniques at their disposal.