How i can change billtoname on sales orders or invoices

Hello i have mas90 4.05 well the question is customname is short only 30 characters but some customers has long name , Is possible change field size to accept more characters.....

on crystal report   to print form sales order has a field called billtoname if put complement iformation for customer name for example maintance customer has a field called comment if put information there how i can print that the way can be like billtoname+comment to get hole information for customer on sales order and invoices...

Thanks hope can help me...