[CentOS] ATI, Catalyst and a new kernel

Please bear with me for a really stupid question...

I have a Radeon HD 4550 video card and currently run the Catalyst 
driver, fglrx_6_9_0-8.741-1.  I use the "package managed" method for  
installing, allowing me keep track of what's what:

[rj at madeleine ~]$ su
Password:
[root at madeleine rj]# grep fglrx /var/log/yum*
/var/log/yum.log:May 20 12:37:07 Updated: fglrx_6_9_0-8.723-1.i386
/var/log/yum.log:Jul 25 13:04:49 Erased: fglrx_6_9_0
/var/log/yum.log:Jul 25 13:33:11 Installed: fglrx_6_9_0-8.741-1.i386
[root at madeleine rj]# exit
exit
[rj at madeleine ~]$

So, my question is, must/should I rebuild the driver each time I install 
an updated kernel or is it sufficient to "yum remove 
fglrx_6_9_0-8.741-1", update the kernel and (maybe) glibc, then "yum 
localinstall $(locate i386/fglrx_6_9_0-8.741-1.i386.rpm)"  ?

If anyone wonders why I don't simply stick with the generic driver, the 
fglrx driver makes a WORLD of difference with Googleearth.

Thanks!