I have been entrusted with the task of setting up the computers for a small electronics repair shop with less than ten employees.
Right now there are a few Windows computers doing various tasks, all connected with an unprotected wireless network and the c-drive shared, full access

Accounting is done using an old version of Peachtree. The work order generator is an old form made with Front Page 98 extensions, which no longer works.
After I implement some security, the plan is to just ditch the current software and create a new setup. I would like to use a LAMP server and a web interface for work orders, inventory, accounting and payroll.
Anyone with experience have suggestions?