OEM Windows licenses die with the original machine; they cannot be transferred to another PC, regardless of the state of that original PC.  This is part of the price you pay for the discount of OEM software.  You can, however, use the XP CD to install on the T3500.  It also does NOT matter what Dell CD you use to install with - the CD is NOT tied to a specific machine. [URL] Again, it doesn't matter what Dell OS CD you use to install, but you can NOT use the XP Product Key from the original system on the T3500. If you want to get "your" CD to work, you need two things:  SP2 (minimum; SP3 is better) and the storage driver.  I would ditch the floppies and use nLiteOS.com to integrate the driver AND the Service Pack into your installation media (this will create a new CD to install with. Intel Rapid Storage driver (make sure system is set to AHCI for SATA): [URL]      
My controller recently failed on an office 350 and I ordered a new T3500 to replace the older workstation.  I have a couple of legacy apps that won't run under Win 7 (even in XP mode) & hence, need to install Win XP on the T3500. Because the 350 workstation will be sent for recycing/no longer used, I want to use the Win XP system OS disk that came with it for the install since I have the OEM license for it while the hardware it was purchased with will no longer be used. I removed the HDD that came w/ the T3500, installed an exact (WD 500GB) new, clean, empty drive to install Win XP on;  tried all 3 different SATA settings in BIOS upon install attempt & get BSOD on all.  From reading already done, it sounds like I need a SATA controller driver since the 350 system came w/ PATA drives; and my (Dell OEM) Win XP OS disc probably has none. Followed advice from a forum to download drivers (someone trying XP on T3500 install) using an external floppy drive/F6 option upon install;  however, all 4 options for drivers that show up result in "file is corrupted" messages.  Hard to believe since I know the floppy drive & disk I'm using are fine. I tried one option that I know works to get XP to install ... using a Dell OEM Windows XP disk from another machine in the office (a Precision T3400) - installing XP w/ this disc went fine;  however, this was a troubleshooting attempt just to see if it worked ... that workstation is still being used in the office & I presume I will run into trouble trying to get Windows updates if I were to continue to use this version. So, it seems definite that it's a driver issue, but I'm not sure what to try next to get XP installed by starting with a OEM Win XP SP1 disc.  Any help would be greatly appreciated since I am not finished migrating data from these legacy apps & can't stop my day-today work to do so.  Thanks!
Installing Windows XP Pro SP1 from Dell Precision 350 OS CD to new T3500