Below is the min specs for Splinter Cell Double Agent. I tried it with a Radion 9600 XT but it was a little slow. If your card has 256 MB mem It may work with your card.
Supported OS: Windows® XP (only)
Processor: 3 Ghz Pentium® 4 or AMD Athlon™ 3000 (3.5 Ghz Pentium 4 or Athlon 3500 recommended). Game optimized for Dual-processor-enabled computers.
RAM: 1 GB
Video Card: Direct X® 9.0c-compliant, Shader 3.0-enabled 128 MB video card (256 MB recommended) (see supported list*)
Sound Card: DirectX® 9.0c-compatible (EAX" recommended) - PC audio solution containing Dolby® Digital *Live required for Dolby Digital audio.
DirectX Version: 9.0c or higher (9.0c included on disc)
DVD-ROM: 4x DVD-ROM or faster with Dual-Layer support(DVD9)
Hard Drive Space: 8 GB
Peripherals Supported: Mouse, keyboard
Multiplayer: Broadband connection with 128 kbps upstream or faster
* Supported video cards at time of release: