I hope someone can offer me some advice on this issue.

I created a running program in VB 2005 Express Edition using a MySQL database. I have over 400 lines of code. How difficult would it be to change this program over to an Access database? I installed a converter that converts the MySQL database over into an Access database. How will this effect my program in VB? Would it cause me to have re-code the whole entire program? Any help or suggestions would be greatly appreciated.