uninstalled by mistake

hi this is my first tim here.
i need help
i uninstalled my pci my mistake and now i have no sound.
this was done some 6 months ago and its driving me mad so i thought i might now try and repair it.
can any one help
regards

HI,

To enable anyone to help you, you need to supply us with some information about your PC first.

Please let us know the following:

Make/Model Number of PC
CPU Speed and type (ie Intel Celeron 2000mhz)
Installed RAM
Hard drive size and available disk space
Operating System and installed sevice packs
Sound card name and model number

All the above information is required fr us to make an informed judgement about your problem.

I await your reply.