Inserting checkbox values into one field

[ebosysindia]

hi

I have a checkboxes on my page (.aspx) like

checkbox1 - item1
checkbox2 - item2
checkbox3 - item3
etc

what i want is that when a user selects certain checkboxes
they should be inserted into a table called
customer which has fields (customer id and actions)

the data should be inserted as

customerid actions
1 item1,item2,item3
2 item1,item3
3 etc..

i.e all the values should be inserted into database into one field separated by commas.

Thanks