The 1001HA is reportedly available with Linux or Windows pre-installed, although the Windows version seems most widely available.
Wired networking requires the atl1c kernel module and wireless uses the ralink 3090 chipset, both supported in the 2.6.32 kernel in Squeeze. Use the Squeeze standard installer for this model.
Boot with the kernel command line parameter acpi_osi="!Windows 2009" or acpi_osi="Linux" otherwise the eeepc-laptop module is not loaded.