X1550 Drivers for Windows 7 Ultimate RC x64 cannot be sourced (or Vista x64)

Hi.

I have a 512MB ATI Radeon X1550 PCI-E*16 GPU.

Windows 7 x64 has automatically installed drivers for me saying I have X1600 series!

I have tried versions 9.3 and 9.4 but both do not work.

The error messages are pasted (badly)

Sorry about the formatting or lack thereof - this is the error message for version 9.4 - same for 9.3
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Catalyst® Install Manager
Installation Report
05/11/09 22:04:37

Hardware information NameATI Radeon Graphics ProcessorManufacturerATI Technologies IncDevice ID0x7140Vendor ID0x1002Class Code0x030000Revision ID0x00Subsystem ID0x3000Subsystem vendor ID0x1787Other hardwareExisting packages ATI Catalyst Install ManagerMicrosoft Visual C++ 2005 SP1 RedistributablePackages for install
ATI Catalyst Install Manager Final Status:SuccessVersion of Item:3.0.719.0Size:20 MbytesATI Display Driver Final Status:FailVersion of Item:8.600.0.0000Size:90 Mbytes
Other detected devicesVO3ÖîJŸ‚Þ T8ðÀ¬1Úç†zÌÙõåoµìG ManufacturerATI Technologies IncDevice ID0x7160Vendor ID0x1002Class Code0x038000Revision ID0x00Subsystem ID0x3001Subsystem vendor ID0x1787
Error messagesDriver Install: the specified driver package was not installed for matching devices
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I'm even having trouble locating Vista x64 Drivers for the X1550 - grateful for any help

Well here are the Vista x64 drivers for X1550

Id uninstall all the drivers you have tried so far, then try these in compatitibility mode. There is no supported Windows 7 driver on the Ati site for this chip.

"Windows 7 x64 has automatically installed drivers for me saying I have X1600 series!"
These didnt work?

Same problem here. only it gives no error other then a blank screen. To get by I use the generic driver .