2-12 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide3. Click the Device Manager tab.4. Double-click the Computer icon to open the Computer Properties window andview the View Resources tab.To check Windows NT resources, start the Windows NT Diagnostics in theAdministrative Tools (Common) folder and view the Resources tab.To check Windows 2000 resources, perform the following steps:1. Click the Start button, point to Settings, and click Control Panel.2. Double-click the System icon.3. Click the Hardware tab.4. Click Device Manager.5. Click View, then Resources by connection.6. Double-click Interrupt request (IRQ) to view the IRQ assignments.NOTE: If an IRQ supported by your card is not available, you may be to able toreassign resources used by other devices or disable unused devices.The computer can support a mixture of a traditional ISA expansion card (called legacyexpansion cards), Plug and Play ISA expansion cards, and PCI expansion cards. Thesystem basic input/output system (BIOS) allows you to install both PCI and ISA Plugand Play expansion cards without performing manual configuration tasks.NOTE: If you are using the Windows NT operating system, you should configure anISA expansion card manually. If you do not have a manually configurable card, you canuse the ISA Configuration Utility (ICU) to manage an ISA expansion card. This utilitycan be downloaded from the Dell World Wide Web site at http://www.dell.com. 3- To install an expansion card, perform the following steps:1. Prepare the expansion card for installation as instructed in the documentationthat came with the expansion card.Check the documentation to make sure the card is configured to work with otherdevices already installed in your computer. Set any necessary jumpers orswitches on the card to avoid conflicts with devices already installed.2. Remove the computer cover and support beam according to the instructions in“Removing and Replacing the Computer Cover and Support Beam” found earlierin this chapter.