Harry,

Sorry, gotta move on but here's summary of getting-online to test drive these three LiveCDs:
Ubuntu 5.10 (Breezy Badger) preview, flawless online session after login to telco with ADSL;
KURUMIN 5.0 (Knoppix & Debian), once modified usb/resolv.conf nameservers flawless too;
KNOPPIX 4.0.2 unsuccessful after many attempts - ifconfig shows eth0 values different to KURUMIN.

Please refer to ifconfig output in last post while successfuly online with KURUMIN 5.0 LiveCD.

KNOPPIX adds a new, second line that successful KURUMIN online session ifconfig doesn't show for
eth0 Link encap:Ethernet rest of first line same as KURUMIN
then KNOPPIX inserts this next line that doesn't appear in KURUMIN ifconfig output
inet addr:10.1.1.3 Bcast:10.255.255.255 Mask:255.0.0.0
next line onwards KNOPPIX reads same as KURUMIN
but last line in the ifconfig KNOPPIX eth0 entry differs from KURUMIN to read
Interrupt:10 Base address:0xe800

KNOPPIX ifconfig lo and ppp0 outputs otherwise match those of good session KURUMIN online's.

Typing telco IP 200.165.104.30 or www.veloxzone.com.br into Konqueror/Firefox returns Unknown host in KNOPPIX.

Off topic but worth mentioning: Surprised unable add USB-connected Samsung ML-143 laser printer with KDE Control Module-Add Printer Wizard with either KNOPPIX 4.0.2 or KURUMIN 5.10 when this was a breeze using Ubuntu 5.10.

Thanks for everything.

Dave