get the min value issue

i have a table like this:

PO V1 V2 V3

1 2007-01-01 Aa a

2 2007-02-01 Bb b

2 2007-03-01 Cc c

1 2007-01-01 Dd d

1 2007-05-01 Ee e

i want get the Value of column V2,V3 , according minimal cloumn V1 ,in each group column PO.

how can i write the SQL statement ?

tahnks.

Here it is,

Code Snippet

Create Table #data (

[PO] int ,

[V1] datetime ,

[V2] Varchar(100) ,

[V3] Varchar(100)

);

Insert Into #data Values('1','2007-01-01','Aa','a');

Insert Into #data Values('2','2007-02-01','Bb','b');

Insert Into #data Values('2','2007-03-01','Cc','c');

Insert Into #data Values('1','2007-01-01','Dd','d');

Insert Into #data Values('1','2007-05-01','Ee','e');

Select * from #data main

join (select po,min(v1) v1 from #data group by po) mindata

on main.po=mindata.po and main.v1=mindata.v1