Can I use Time Capsule for backing up MacBook Pro on OSX10.4 & for a new MacAir & how would I do this?

I have a MacBook Pro on OSX10.4. I want to back up all my files & iphotos before I buy & install new OSX. I also want to get the portability of a new Mac Air. But, I have no idea how to back up & I'm finding all the information on Time Capsule & different hard drives confusing. I want 'one' external hard drive only - what will meet my basic needs?

LaCie Porsche Design P'9223 USB 3.0 Mobile Hard Drive

LaCie Porsche Design P'9223 USB 3.0 Mobile Hard Drive

Product No Longer Available

No Answers have been submitted