Can I upgrade directly from Mac OS X 10.5 Leopard to 10.7 Lion? Possible Duplicate:
  Can I upgrade to Lion straight from 10.5.8?  




For us 10.5 users, is the only path a two step upgrade to 10.6 then 10.7?

Also, is there a hardware compatibility chart? My mac is an older macbook, not sure if it's even supported by Lion.
According to this page, you need to get on Snow Leopard before installing Lion.  It also gives hardware compatibility requirements, which are basically that you have an Intel Core 2 Duo (note: NOT Intel Core Duo), Core i3, Core i5, Core i7, or Xeon processor in your Mac.