To the one who is asking this question, we say that this woman should be taught to say the Shahaadatayn (the two declarations of faith) and then how to practise Islamic rituals such as salaat (prayer), etc. After that, a Muslim qaadi (judge) could do the marriage contract (nikaah) for him. If there is no qaadi there, then the director of the Islamic centre could do it, in the presence of two male witnesses.
As regards what should be said by the one who does the marriage contract, he should say khutbah al-haajah, which you will find under the question that comes before this one (# 2066); I will send it to you with this reply, in sha Allaah.
May Allaah reward you.
Sheikh Muhammed Salih Al-Munajjid