This unit was purchased on 8th July 2005 from a Melbourne discount PC retailer.
I didn't waste any time getting the cover off. :)
Does these innards look familiar? Is this a rebadged unit or are MSI the actual manufacturer?
To see more detail, here is a link to the full sized image. (NB: this is a 16 megapixel image so your browser may not like it.)
Note the 10 pin header to the right (JP2), and the 14 pads above it (JP1)
List of IC's:
ISL3893 - CPU with integrated WLAN. google
W986416EH-6 - 64Mbit 166MHz SDRAM (1M x 16 bits x 4 banks). datasheet (winbond)
RTL8305SB - 5 port 10/100Mbps single chip switch controller.
29LV160BB - 8Mb flash (2M x 32 bits).
UPDATE This unit looks almost identical to the MN54G4R Minitar Wireless 802.11G Residential Gateway (archived pic here)
The MSI RG54GS2 adds a print server (via USB) so this is most likely 100% identical to the Minitar (hardware wise)
(Click for a larger view of the outside case - MSI RG54G2)
sensation.net.au at rowan (reverse username and domain to email me...)