How long does it take to get a USA VISA?

She should apply now if you want to travel in March 2008. She will have to apply for a B visa. As she has a pport for her home country rather than Canada, even though she is a resident of Canada she is not a citizen (she does not have a Canadian pport) she has to follow the immigration rules for applying for a visa for a Czech citizen, as that is what she is. Her home country is not in the VWP (1st link) she has to apply for a B visa (2nd link) as to how long it will take well as long as she provides the correct information and related doents the wait should not be too long. But like any planned trip you should deal with things well in advance in case of back log