If you want the remaining battery to show up in your task bar you need to install a custom task bar cab. Here are two examples. Let me know if that's what you mean.
http://forum.ppcgeeks.com/showthread...hlight=taskbar
http://forum.ppcgeeks.com/showthread...hlight=taskbar
You can also check your remaining battery by going into "System Info" under All Programs. When in there, click on the bottom tab that says "battery"