Try castor oil packs or massage

Try castor oil packs.  Here's a site that give the information on how to make a pack (I use cotton flannel instead of wool - it's much cheaper and just as effective).

http://www.gentletouch.co.uk/treatments/Castor_Oil_pack.htm

Here's a site that explains the connection between castor oil and the lymph system.

http://ezinearticles.com/?Castor-Oil---Natural-Remedy-For-Swollen-Lymph-Nodes...

There is also a castor oil forum here on Cure Zone and you might be able to get more information from them.

http://www.curezone.com/forums/f.asp?f=273