URGENT - COMMA SEPRATED VALUES EXCEL TO SQL FROM ASPX PAGE.

Question

Hi..

Please help me out in the following -
I have a table as-

ID	Asset_Code	Asset_Name	AssignedTo
1	A1	Keyboard	ABC
2	A2	Keyboard	DEF
3	A3	Mouse	GHI
4	A4	Monitor	JKL

Now, ID is unique (Primary Key).
Step-1
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Now, there is a text area in the front-end i.e. aspx page.
THe user will type the name as "Abc". Here, I want the system to load all the names starting from A.
Just like in outlook, we type name and the name and email appears in the search list.
Then, the user selects the name "ABC".
The user should be able to select multiple values i.e. "ABC; DEF;".
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Step-2
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There is a button on aspx page.
When the user clicks on this button, an update query should be fired.
i.e
update tablename set AssignedTo = null where assinedTo = "ABC; DEF" and AssetCode = "A1; A2"
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Please help.
Its Dam Urgent.