Hi folks: I have a 2001 PowerBook G4, aluminum, 256 MB RAM/20 GB HD, OS 9.2.2.It doesn't have an Airport card. Id like to use it for basic wireless stuff like getting my email and web surfing. What's the least I can do to get (nonweb) email and web surfing? (It's got some issues so I'd rather not put a lot of $$ into it). (I currently also use a ThinkPad for home use, but want to use the Mac for travel, so much lighter and so sleek!) Can I use a regular Airport card (or Extreme?). Do I need to upgrade to OSX, or can I still use 9.2.2? Thanks for your suggestions!