I found the episode mentioned on a P2P site and was able to d/l it.
Here are a few screen grabs i was able to take.
Episode starred UK Actress Helen Mirren (Prime Suspect)
She looks very dowdy and timid in the first scenes but when she puts on the shoes she turns into a very glamourous confident woman as can been seen in the 3rd picture.
Enjoy!!
http://www.barney15c.pwp.blueyonder....ren/shoes1.jpg http://www.barney15c.pwp.blueyonder....ren/shoes2.jpg http://www.barney15c.pwp.blueyonder....ren/shoes3.jpg