>1) i'm probably sounded silly asking this but can someone helpme put my mind at ease by telling me whether the number of records that can be stored inside a table is limited by the user's hard disk space or by some other elements in foxpro?

The number of records that can be stored in a table is limited by hard disk space. Also, the total size of the table cannot exceed 2GB.

>2) I develped a program to display certain records on screen using grids before they are printed out. now i find that i have to filter the records shown on the grids according to certain dates. after that, i'm also supposed to let the user select which records they want to print out from the filtered list. I'm really confused as to how i'm supposed to let them select the records from the grid? is there any other way i can let users select random records from a table other than grids?

You could add a column to the grid and put a checkbox control in it. The user could check the records he want to print.