I would try something like:
Code:

$sMyDocument="C:\temp\demo.xls"
$table=1
$column=2

$oE=CreateObject("Excel.Application")
$oE.Workbooks.Open($sMyDocument).

for $row=1 to $oE.sheets($table).rows.count
$val = $oE.sheets($table).cells($row,$column).value
if len($val)
$vals = $vals + chr(10) + $val
endif
next
$oExcel.Quit

$vals=split(substr($vals,2),chr(10))
for each $username in $vals
? $username
next


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