Looking to convince marketing the value of Silverlight

I work at a medical device company where Engineering is wanting to refactor complex prescription code because we have a version for the web and a different version for Windows.  They have the exact same functional outputs but were coded by different people, and now need two development efforts to support them.

Now we want to create the code from scratch, including the GUI, using Silverlight or Silverlight and WPF.

We are having a hard time convincing marketing it's worth the wait, since they see any refactoring as a step backwards.

Does anyone have any suggestions that may help us sway them?  If they are not on  board, it probably won't happen.

newbiewebSr. Software EngineerAsked:
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Ever consider use Adobe Flex ?
It is far more superior to WPF/E
newbiewebSr. Software EngineerAuthor Commented:
how so?
newbiewebSr. Software EngineerAuthor Commented:
and I think WPF/E was the name they gave Silverlight 1.0.  Version 3's out this summer.
yeah I am a microsoft dot net developer for many years.
wpf/e codename is silverlight, it is a competitor of adobe flex, which have been available in the market for many years.
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newbiewebSr. Software EngineerAuthor Commented:
thanks.  my problem is i'm not yt really a web  developer: WinForms ASP.net 3.5.  our shop is asp.net and isn't going to change.   i need to put my eggs into one basket  since i use my free time catching up.  so i am MS all the way, regardless.

back to the question.  how best to convince marketing SL and WPF are step forward and worth the wait.

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