Snow Leopard

It's against the EULA. Just purchase the Family Pack.

 

Well, we'd tell you off if you hadn't bought the rights to do that for starters (The Up to Date program does give the option to Tallest Skil, though it seems unliekly if the OP is asking).

 

snow leopard isnt out yet

the retail disk will work on as many macs you want that meet specs....just against licesne.

the restore discs are machine specific

 

You mean Leopard, as Snow Leopard hasn't been released.

The official answer is that you should buy the family pack if you're putting it on multiple machines.

 

User means this http://www.apple.com/uk/macosx/uptodate/

And one legal way to do it is

wouldn't that indicate the disc wasn't machine specific?
Family Pack mght work out best (and likley you could buy it before the up to date shipped to you as they're giving up to 3-4 weeks shipping time on it).