>I would like to try some visualizations to help these problems along
>while I am being treated.

The healing exists on different levels. For a "normal" person, it is
best to go through the heart chakra.

Step one.
First, you need to feel in love. Remember someone you love, some event
dear to you, something very nice. Keep your mind on it until you feel
a warm glow in your chest. This means that you have activated the
heart chakra. 

Step two.
You feel that warmth, filling your entire body. Feel the warmth in
your knee (or whatever problematic part of your body). Feel the warmth
and love nurturing and healing it. 

Step three.
Breathe love and peace through your knee (or whatever is the problem).
Breathe love and warmth in, feel it there, feel it in your body. Now
exhale that love and peace through that part; radiate love as you
exhale; it's important to inhale and exhale _through_ that part, to
keep your focus on it. Focus on the problematic parts first, then
repeat the exercise on all other parts of your body - arms, legs,
genitals, anus, belly, neck and head.

Step four.
Feel yourself as healed and loved. Keep that feeling with you, and
don't let it go.


Do this exercise at least twice a day until you are healthy, and when
you are, don't stop; instead, go into deeper practice. If you are
interrupted during practice, start from the beginning, don't try to
start from where you were interrupted, because you won't make it, and
you'll just be frustrated. Instead, go slow and steady. 
Here, I hope this helps. :)

-- 
Web (Kundalini-yoga): http://danijel.cjb.net