The electric acid grandma test: My mother has been wanting to get on the Internet and send emails for a while now. Since neither she nor I knew if she'd like having a computer, I wanted to get something cheap. And since she didn't have a lot of space to spread out, a laptop was preferable. Looking through the classifieds, I found someone selling an IBM Thinkpad 380XD computer for $100: PII 233 MHz, 95 MB RAM, CD-ROM and floppy drives, and a USB port. Not bad for a starter system where