This may mean contacting the source or whoever you got the data from. With that information in hand you can use the Arc-Info project command to do the job. If you are an ArcView user then you will need to ask an ArcInfo user to do the job for you. ArcView does not do projecitons at this time. Metadata is 'data about data' or descriptive information about a dataset.
Metadata consist of information that characterizes data.
Metadata are used to provide documentation for data products. In essence, metadata answer who, what, when, where, why, and how about every facet of the data that are being documented. The Federal Government has specific standards in place. Metadata can tell you where data came from, who produced it, what it might or might not be useful for and other such things. In using any data, geographic data included, one must be aware of the limitations of the dataset.