I do not normally use Photoshop, but would think that you could find information on how to install the Topaz plugins here: http://www.topazlabs.com/support/kb/index.php?View=entry&EntryID=10
Others may be able to give you some additional help if necessary.
|_MG_5100 by tim and jan|
from Welcome to the Saloon!
|The Grimm 11 year old by Ryan Gardner|
from Trick or Treat
|Heron with fish by APenza|
from A Big Year - birds