498774 OScommerce error fixing

The site is a shopping mall with many small shops in it. it is based on oscommerce. I started to move it, but realised there is some php4 code that needs to be converted to PHP5, mostly to do with sessions and globals. I will provide the old and new files to the selected developer only. We don't have much budget for this, but you can expect lots of work from us on regular basis, see our review.