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Dear prof. Yates,<BR>
<BR>
Thank you very much for your help and detailed explanation. I indeed do understand things much better now...Thanks everyone for this extremely helpful forum.<BR>
<BR>
<BR>
Regards<BR>
<BR>
<BR>
Elie Moujaes<BR>
University of Nottingham<BR>
NG7 2RD<BR>
Nottingham<BR> <br /><hr />Not got a Hotmail account? <a href='http://clk.atdmt.com/UKM/go/197222280/direct/01/' target='_new'>Sign-up now - Free</a></body>
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