TopoUSA 4.0 DVD installed succesfully under Xandros 3.0 with CodeWeavers 4.2 ( 2.6.9 Kernel ).
As 3D support in TopoUSA requires DirectX 8.1 and above, choose the install option for 2D support only that does not require DirectX.
There are several updates available for TopoUSA 4.0 bringing the release to 4.2. All available patches installed successfully.
The Delorme network update feature "netlink" works correctly in identifying the current patch status for TopoUSA.
Next Steps include validation of Basic Topo 2D functionality, stability and performance and the ability to load additional datasets.