Howdy vikingdrive. I am just a biker that owns a EEEPC 701SD and am a mod at eeepc forums, (site has been down for ages though).
Xandros which you are running is Debian Etch based and Xandros crippled it with the libraries it uses. Also GTK is too old in Xandros for Updating Firefox also. So. For Updating Firefox. I used to be able to point you to the EEEPC wiki which has a section for running a script to update to Firefox 3.0 in Xandros. Problem is the site is down.
So. The best I can show you is, (I have never done this), so if anything breaks. Not my fault and since I don't have access to eeepc forums. I can't tell you how to unbork what you did short of doing a F2 reinstall which will wipe all saved data and give you a pristine Xandros reinstall.
I left Xandros ages ago and run AntiX on my 701SD now. My latest How to which I made with my EEEPC 900, (I own one of those also). It is a step by step procedure on Installing Antix with screenshots.
I have also ran Semplice Linux and Puppeee Linux and Macpup 528 off of external pendrive on my 701SD and those distros worked just fine on my 701SD also. I know some of this may be over your head. But I am no spring chicken either with a GED education and I just decided I was not going to be outdone by any script kiddies.