How to prepare (or not) small company to IPv6

For a truly small company, just wait for your ISP, and anyone else who handles your public face : if you have hosted mail, they should handle any IPv6 matters for mail. If someone hosts your website, ask them if they have made IPv6 DNS entries for you, or what their plan for doing so is. If they say they don't have one, I wouldn't worry about it much this year. Maybe a little bit of worry next year, but it's too soon to say.

I'd be suprised if your ISP didn't offer IPv6 now. Small companies will have the easiest transition so I would get them started now. depending on the home router they have they may or may not have to purchase a new one. http://www.sixxs.net/wiki/Routers is a geat resource to get started on what home routers to look at.