Look at more reliable sources. I cross-checked even a couple Intel MOBO's with the ATI Radeon XPRESS 200 chipset and not a one list 'Dual Channel' ; e.g.:
Intel D101GGC - http://www.intel.com/support/motherboards/desktop/d101ggc/sb/CS-025961.htm
Intel D102GGC2 - http://www.intel.com/support/motherboards/desktop/d102ggc2/sb/CS-026579.htm
Every chipset I can think of including the Intel 845 that's capped @ '2GB'
is only single channel.
Examples of chipset's that do support Dual Channel - Intel: 875/865/848 (4GB), 925/915/910 (4GB), and 975/955/945 (8GB).
Bottom-line, you wouldn't know or even sense the difference, and all that's relevant and important is that all 2GB of your RAM is being detected. If all 2GB is being detected then you're all 'Aces' and fine.