the CNET's Download.com download link fails with a "File not found";
http://download.cnet.com/Attansic-L2-Fast-Ethernet-10-100Base-T-Controller/3000-2112_4-148601.html

I will report this to the Download.com team, but I fear there may be problems. Like you, I found no other 'safe' web sites where this could be downloaded from. The few safe sites I found failed to download it, and there are plenty of unsafe sites, warez, foreign language sites which my browser add-on suspects as dangerous, etc.

I even found this Version Tracker site, but the link to the download failed;
http://www.versiontracker.com/dyn/moreinfo/win/114484

The Asus web site http://www.asus.com/entryflash.htm was no help at all.

It makes me wonder if this product has been withdrawn, and I am not sure this is going to be resolved to your satisfaction.

Mark