BIOS upgrade

One of my computer at work, a P-133, has a BIOS which is not Y2K compliant. Where can I find a free BIOS upgrade for (Award Modular BIOS v4.50PG). It is made by Award Software Inc. with the following string:
03/08/96-i430FX-2A59CF5HC-00. Any help would be great. Thanks.