well, I know three trick thingies
1. go to start, run run, type in cmd. Now you can use commands like del [file] . which deletes the file you select. You can find out a webite's IP address with ping [website.com/net/org/etc.]. For example, thewiiforum's IP is 208.43.115.210 You can type this number with the periods into the URL bar and get to the same website. Also, you can make a message appear on the computer screen for a minute with msg * [type in message here] and it will appear for about a minute
2. go to start, run run, type in OSK. Using this, you can now type without using your keyboard (if you want to).
3. alt numbers. make sure numlock is on, and then hold alt, and type in numbers to get a symbol. It repeats from 256, so after that the numbers are kinda random. for the full list of them find it here:
http://thewiiforum.com/alt-numbers-t4830.html?t=4830