That doesn't appear to have fixed my problem....
{1}[d:\home] yum update urlgrabber
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:
   No module named urlgrabber
Please install a package which provides this module, or
verify that the module is installed correctly.
It's possible that the above module doesn't match the
current version of Python, which is:
2.7.6 (default, Apr  7 2014, 18:19:49)
[GCC 4.7.3]
If you cannot solve this problem yourself, please go to
the yum faq at:  
http://yum.baseurl.org/wiki/FaqDirectory contents....
Directory of D:\usr\lib\python2.7\site-packages
 7-30-14 12:36p         <DIR>    124 a---  .
 4-07-14 11:27a         <DIR>    124 a---  ..
 4-07-14 11:22a           119    124 a---  README
 7-29-14  3:47p         <DIR>    124 a---  rpm
 7-18-14 12:58p         <DIR>    124 a---  rpmUtils
 8-18-09 10:26a         2,510    124 a---  sqlitecachec.py
 4-07-14 11:28a         2,226    124 a---  sqlitecachec.pyc
 4-07-14 11:28a         2,226    124 a---  sqlitecachec.pyo
 7-30-14 12:33p         <DIR>    124 ----  URLGRABBER
11-20-10 10:25a         2,279    124 a---  urlgrabber-3.1.0-py2.6.egg-info
 7-18-14 12:58p         <DIR>    124 a---  yum
 4-07-14 11:28a           213    124 a---  yum_metadata_parser-1.1.4-py2.7.egg-i
nfo
 4-07-14 11:28a        38,828    124 a---  _sqlitec.pyd
And the urlgrabber directory contents....
Directory of D:\usr\lib\python2.7\site-packages\urlgrabber
 7-30-14 12:33p         <DIR>    124 ----  .
 7-30-14 12:36p         <DIR>    124 a---  ..
 7-20-06  3:15p        17,157    124 a---  byterange.py
11-20-10 10:25a        16,819    124 a---  byterange.pyc
 9-21-06  7:58p        56,807    124 a---  grabber.py
11-20-10 10:25a        53,142    124 a---  grabber.pyc
 9-21-06  7:58p        21,089    124 a---  keepalive.py
11-20-10 10:25a        21,432    124 a---  keepalive.pyc
 2-22-06 12:26p        18,069    124 a---  mirror.py
11-20-10 10:25a        17,066    124 a---  mirror.pyc
 8-19-05  4:59p        18,235    124 a---  progress.py
11-20-10 10:25a        20,057    124 a---  progress.pyc
 9-21-06  7:58p         3,099    124 a---  sslfactory.py
11-20-10 10:25a         3,168    124 a---  sslfactory.pyc
 9-21-06  7:58p         2,259    124 a---  __init__.py
11-20-10 10:25a         1,675    124 a---  __init__.pyc
       16 file(s)     270,074 bytes used
                  378,111,057 K bytes free
Got any other ideas?
-Mark