10.2" ZT-180 ANDROID 2.2 TABLET Can I use RJ port adapter?

[Nethers]

HI All
Hoping someone can help... Im looking at the ZT-180 ANDROID 2.2 TABLET but would like to run a ethernet cable into a RJ port adapter (USB) for internet connection.. understand its all about the wi fi.. but keen for cable for this.. Can this be done?
Many thanks