Although, from personal experience, having a wireless card in a desktop machine isn't all that great. because the wireless card will be right next to the floor and/or wall, the general signal has a problem actually transmitting loud and clear. Though if you have this problem, you might also take a look at getting a high gain antenna as well.
Wisdom is knowing what to do. Skill is how to do it. Virtue is getting it done.
That which does not kill you, isn't trying hard enough.