BioWare Corp's BG2 Reporting Bugs page now offers downloads of version 1.0 of their SysInfo Tool, which will allow you to test how well your machine matches the system requirements for installing and playing Baldur’s Gate II: Throne of Bhaal as well as create a system configuration file to submit with your bug report, though it is also noted that a detailed explanation of the bug you are encountering will still be required.