The Nashbar bike is barely better than a Walmart bike. Spend an extra hundred bucks and get this if you have to get an entry level bike:

http://www.bikesdirect.com/products/...ne_500HT07.htm

Or, even better, save up $450 and get this solid mid range one. It will likely last you a while and you'll be glad you spent a little more:

http://www.bikesdirect.com/products/...cane_700HT.htm