all group maxOccurs cannot be unbounded limitation

Hello,
Can someone explain to me how to specify any order of
elements and any occurence for each?  I need xsd:all
with child elements' maxOccurs="unbounded", but this
does not seem to be valid.  So how else can I do it?
Also, I really do not understand why this limitation
was put in and why it cannot be turned off.  Can
someone explain to me the logic behind this decision?

Thanks,
Chris

__________________________________________________
Do You Yahoo!?
Great stuff seeking new owners in Yahoo! Auctions! 
http://auctions.yahoo.com