With the DSL, you can just reset the modem to get a new IP. You don't have to shut down the entire computer.
If your DSL is provided by AT&T or SBC via Yahoo, you should be aware that when the new IP is assigned, your ISP still knows it is you - thus Yahoo knows it is you. If you use a caching toolbar or plugin or if you use Google internet speeder upper (whatever they call it from day to day), changing your IP and even masking your cookies won't help. The cached data via the service will still give you away.
| 
