Looking for some tracking software

Hello,

I am looking for a better way to keep track of reports for the company I work for. My main information I need to keep track of are overall mileage travelled, mileage per state and highways travelled. My needs are not as sophisticated as others due to the fact that trucking is only a part of our business; we are not a trucking company. I know that there are GPS devices which can be installed into the trucks (we have 15) and the information is collected by a hosting company. From there I would have access 24/7 on my computer which is updated all the time. Could somebody please point me in the right direction of a company who offers tracking that meets my requirements? I really appreciate the help, this is so far out of my area of comfort! Thanks