Changes to a site

have a couple of changes I need done to a site. I need someone that really knows php. 1. I need to clear some data from a field that keeps coming up when adding a new customer. 2. Right now the way that the site is set up I can not set up free accounts, (every user has to pay) and I need to do that so that for example when I use the site it does not charge me. 3. When printing invoices using windows 9 browser there are blank pages in between the invoices. It prints fine in Firefox, and chrome, but not windows 9. 4. The way the site is set up, customers have to renew their memberships every month. I want to set it up so that the system can automatically charge them every month. Instead of having the user have to manually renew each month. Thanks