hello Annette... Yes, most everything from 4 will work in 5... as a comparison, P5 is slower...end result better... Much larger learning curve...there are many more options... I highly advise scrolling or searching through the messages here...on this topic...there is much discussion and differing opinions on Poser 5...also..note above in the banner.. there is a link to Poser 5 sr2.1 forum...please read some of that stuff... There have been issues with P5...many of them addressed with service release 2.1....but some remain...

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Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854