For those of you who want to root your Toshiba Thrive Android tablet, guys over at ThriveForums.org have a one-click root method for Windows.
To root your Toshiba Thrive, download thriveroot.zip and unzip to your hard drive:
Install the drivers in the usb adb drivers folder inside the thriveroot folder.
Then simply run the thrive_easy_flash_tool.bat file, choose “Root your device”.
If you want to install/backup/restore ROMs, also do “Flash ClockWorkMod recovery image to your device”.
To unroot, simply run the thrive_easy_flash_tool.bat file, choose “Unroot your device” then “Flash stock recovery image to your device” if you installed ClockworkMod Recovery.