Heck, I certainly don't look down on them because of trivial stuff like that. We all had to start somewhere -- they know things that I don't and vice-versa. I assure them that if they really wanted to, I could easily teach them the basics of surfing online. They just don't have the same interest in it that I do. Although, they're coming around -- more and more they realize how valuable a tool like the Internet is, because they often ask me to look things up for them.
But hey, I can easily provide anecdotes of my lack of knowledge in my early computer years. For instance:
1. Once on my Apple ][, I confused INIT (which formats a disk) with SAVE, and I ended up erasing an entire floppy.
2. When I first started getting into IBM PC compatible clones, I didn't know what a hard drive was. My friend told me that there is a 20 MB "hard disk" inside the machine. Huh? How can there be some kind of large disk inside
3. When I first heard about structured programming, I thought it was impossible to write programs without line numbers (this is what dabbling exclusively in Applesoft BASIC for several years does to you).