As per Qur'an 3:28, to what extent can Muslims receive help from non-Muslims?

I was wondering about the verse from the Qur'an (http://quran.com/3/28) : >"Let not believers take disbelievers as allies rather than believers. And whoever [of you] does that has nothing with Allah, except when taking precaution against them in prudence. And Allah warns you of Himself, and to Allah is the [final] destination." > > --- Sahih International --- And another translation: >"Let not the believers take the disbelievers as Awliya' (supporters, helpers, etc.) instead of the believers, and whoever does that will never be helped by Allah in any way, except if you indeed fear a danger from them. And Allah warns you against Himself (ie. His Punishment), and to Allah is the final return." > > --- Muhsin Khan --- I was wondering about the implications of this verse and to what extent one can take help from non-Muslims, as also having friendship and warm relations with them. For example, I have several good friends from among non-Muslims who help me with advise in my work, and I also have good business — and consequently personal — relations with many of them. Is this allowed?