naming convention for System.map file?

[tashirosgt]

I'm compiling a custom kernel from the source in /usr/src/linux-2.6.9-1.6_FC2.
What naming conventions must I use for the System.map file?

I gather the custom is to copy the new config file /usr/src/linux-2.6.9-1.6_FC2/config to something like
/boot/config-2.6.9_custom

Then,after compiling with the new config file, do
cp /usr/src/linux-2.6.9-1.6_FC2/arch/i386/boot/bzImage /boot/bzImage-2.6.9_custom
cd /boot
mkinitrd initrd-2.6.9_custom.img 2.6.9-1.6_FC2

But do I copy
/usr/src/linux-2.6.9-1.6_FC2/System.map /boot/System.map-2.6.9_custom
?
How does grub (or whatever uses it) deduce the correct suffix for the System.map file?
Does it take it from the suffix used for bzImage in the grub.config file?
That file lets me mention bzImage-2.6.9_custom and initrd-2.6.9_custom.img by name. But I don't see any entry for the System.map there.