Multiple Combo Boxes

Hi there,
I have a manualy constructed user form which has 3 data validation lists.
Sources:
B7 = List 1
B12:B15 = List 2
B17:B20 and C17:C20 = List 3
These operate fine but I wish to replace the dropdown validation boxes and replace them with Combo boxes so that users are able to view the complete lists and also offer the option of inputting an item not included in the validation list if required.
I have tried many variations of input but my knowledge base is inadequate!
Mainly I end up with the combo box working on one cell only!
Can someone please advise:
1. Do I have to raise 1 combo box per cell?
2. What vba code is necessary to make them all work?
Regards,
OldSoldier

Hi Pike,
I appear to be unable to attach the file, maybe it is too big to meet the system.
I could maybe e-mail to you it as an attachement?
Rgds,
OldSoldier

Hi Pike,
I have sent a copy of this file to the operators of this site in the hope that they will be able to assist in the upload. If they can I believe that you will see what my intention is.
Regards,
OldSoldier

Ps. Pity about the result, by the time the next is played I should be resident in your country, can't wait!!

Hi Pike,
I have deleted several pages, all very similar, to reduce the size of the file.
It seems to have worked.
The required lengths of combo box displays are:
B7 = 15 lines
B12:B15 = 40 lines
B17:C20 = 25 lines
Hope that this makes sense to you.
Regards,
OldSoldier

Hi Pike,
Thanks for your assistance. I will now go away and work on this.
Regards,
OldSoldier