no., you need to get your hsync range for that monitor/LCD
your best bet will using google for linux, its your new best friend
www.google.com/linux
You will want to use vi, emacs joe or any plain text editor to edit the file to the correct vsnyc and hsync ranges.
same as when you used cat except it will be
vi /etc/X11/XF86Config
or emacs or whatever editor you want, instead of vi
I just know for sure you have vi installed.
Make a copy of the file before you edit it, in case you screw up while editing it.
Im sure since you got it on there you've realized by now you could have used the guide. If you remember how your C: drive is called hda, it wouldn't have mattered once you set up partitions. Linux doesn't care if it is spreads across hda and hdb or one drive.
Also a wealth of knowledge here
www.linuxquestions.org
use the google site string for there to narrow down what you need to wade through
Ex:
hsync dell inspirion 8600 site:linuxquestions.org
HTH