Tantric and Carl Kenner have released DOSBox Wii 0.72.02. DOSBox allows you to play old DOS games on your Wii.

Features:

Upgraded DOSBox engine to latest SVN
Fixed lockup when only using the Wiimote (no attachments connected)
Compiled with latest libogc and SDL Wii

http://www.wiibrew.org/wiki/DOSBox_Wii