In your situation, it doesn't sound like you need a laptop. You only mentioned you need to check e-mail, appointments, etc. I suggest you get a PDA. Many PDA'a come with wi-fi, so say you are at a StarBucks or at any wireless hotspot, you can get an internet connection. You might also want a smartphone. Many new smartphones are coming out like the Motorola Q. They have PDa functionality and many have wi-fi.
I purchased a Gateway laptop - much too heavy. (Torn rotator cuff>surgery...) Likely capable of much more than I use it for. Looking to the smallest possible "carry around" capable of carrying microsoft word and microsoft office. E-mail would be nice - perhaps not necessary. (Utilize these for appointment scheduling and writing.) Maybe a PDA is the way to go. I would like ease of access to phone numbers, and appointments, while being able to write in word if possible.