HELP NEEDED TO CREAT TABLE FOR COLLECTION

1 am using this code & every time i have to input mode of transport , so help needed to create table of collection , so that when i come to mode of transport it should show list of collection - by toad , by air , by ship & i have select any one for the list & also if possible by default it should show by road , but we can change from list.

Code:

 [System: UDF]
    MyMODEOFTRANSPORT: STRING: 3001
    [#Part: LEd Other Details]
    Add: Line: MyLine1001

[Line: My Line1001]
    Field: Medium Prompt,My Field1001
    Local: Field: Medium Prompt: Set as: "Mode of Transport : "

[Field: My Field1001]
    Use: Short Name Field
    Storage: MyMODEOFTRANSPORT