Ram For macbook and macbook pro?

hello i took out the 2 gigs of ram in my old macbook pro and ungraded to 4gb. can i take those 2 667 ddr2 dims and put them in my sisters white macbook and upgrade it from 1gb to 2gb? they are both 667 ddr2 i think it should work as long as it fits. Am i correct or just wrong.
apollo

i have old and new macbook pros. i don't see the problem my question was resolved quick! thanks to helpful people on this forum. and fyi the ram was taken form a late 2008 17 inch macbook pro.

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    This is the 1st version of this tip. It was submitted on August 14, 2009 by a brody.
    Do you want to provide feedback on this User Contributed Tip or contribute your own? If you have achieved Level 2 status, visit the User Tips Library Contributions forum for more information.

    "this tip ready for consideration"
    Please put in:
    http://discussions.apple.com/category.jspa?categoryID=140
    http://discussions.apple.com/forum.jspa?forumID=1222
    http://discussions.apple.com/category.jspa?categoryID=218
    http://discussions.apple.com/category.jspa?categoryID=190
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    http://www.apple.com/support/macbook_macbookpro/batteryupdate/
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    Pretty nice change for those C2D's

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    bcassid
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    They are not the same; the disassembley pictures for both are here so you can compare for yourself
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    MacBook Pro - http://www.ifixit.com/Guide/85.1.0.html

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    mangesh171 wrote:
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