Cuda on RHEL 4 Update 7 Error when running Cuda SDK samples

Hello All,

I recently setup two PCs using the GeForce GTX275 video cards. The OS is RHEL 4 Update 7 and the Cuda version is 2.2. When I run the Cuda SDK samples that output graphics I get the following error: Support for necessary OpenGL extensions missing. Have any of you encountered this same problem and know what the solution is?