I am not familiar with PF - but I've never let that stop me in the past ;-)

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Try here for some insight (if you are feeling nostalgic):

http://www.smartcomputing.com/editorial/article.asp?article=articles%2F1992%2Fmay92%2F0513%2F92n0513%2Easp&guid=w1c3g5g0&searchtype=&WordList=