To apply this patch, download it to your local system (the /tmp directory, perhaps?) and insert a formatted 3B2 floppy into the floppy drive. Then run these commands depending on whether you took the compressed version or not:

For the compressed version:
# cd /tmp
# uncompress y2k3b2.Z
# dd if=/tmp/y2k3b2 of=/dev/rdiskette bs=9b

For the uncompressed version:
# cd /tmp 
# dd if=/tmp/y2k3b2.bin of=/dev/rdiskette bs=9b

Label the floppy "3B2 Y2K patch" and use sysadm installpkg to install it. This does not require a reboot.