According to the system log, something went wrong when I installed my Linksys wireless network adapter using Ndiswrapper. I got it to work once before, but am now unable to duplicate whatever I did. Dmesg says: (I have reprinted only what looked relevant, and can reprint every line on request.)
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eth0: RealTek RTL8139 at 0xd08be000, 00:50:bf:e9:6d:3e, IRQ 10
eth0: Identified 8139 chip type 'RTL-8139C'
usbcore: registered new driver usbfs
usbcore: registered new driver hub
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:1
uhci_hcd 0000:00:1f.2: irq 11, io base 0x1820
uhci_hcd 0000:00:1f.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usb 1-1: new full speed USB device using uhci_hcd and address 2
ndiswrapper: no version for "struct_module" found: kernel tainted.
ndiswrapper version 1.2rc1 loaded (preempt=yes,smp=no)
ndiswrapper: driver wusb54g (Linksys,09/09/2003, 0.6.0.0) loaded
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (c0000001), return address: d0bbc9ea
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (c0000001), return address: d0bbce4f
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (c0000001), return address: d0bbd2f1
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (c0000001), return address: d0bbce4f
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (c0000001), return address: d0bbd2f1
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (00000103), return address: d0bbdece
ndiswrapper (NdisWriteErrorLogEntry:303): log: C000138A, count: 3 (c0000001), return address: d0bb9b80,
eth1: ndiswrapper ethernet device 00:0f:66:17:a7:f5 using driver wusb54g, configuration file 1915:2234.0.conf
eth1: encryption modes supported: WEP, WPA with TKIP, WPA with AES/CCMP
usbcore: registered new driver ndiswrapper
[drm] Initialized drm 1.0.0 20040925
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10
ACPI: PCI Interrupt 0000:00:01.0[A] -> Link [LNKA] -> GSI 10 (level, low) -> IRQ 10
[drm] Initialized i810 1.4.0 20030605 on minor 0: Intel Corp. 82810 CGC [Chipset Graphics Controller]
mtrr: base(0xf8000000) is not aligned on a size(0x180000) boundary
[drm] Using v1.4 init.
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Distribution: Xandros, open circulation.
Computer: Gateway PC, Celeron processor; 598 MHZ; 256 MB RAM; 9.5 GB HD.
Wireless equipment: Linksys 802.11g USB adapter (WUSB54G).
Ndiswrapper version: 1.2.

Oh, and I did go to the control center and switch to eth1, and enter the (static) IP address, subnet mask, etc., and check eth1 as the default gateway.