What you can use is the Value from Range method. It could be something like this:

my $cols_pos = 'c';
my $row = 3;

my $selected_range = $Sheet->Range("a${row}:${cols_pos}${row}")->{Valu
+e};

$onerow = join (' ', @{$selected_range->[0]}); # 0 just because we kno
+w its only one row which we want
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The Range parameter is the start cell and the end cell like if you selected in Excel. So how you set row and cell position is up to you. Moreover you can get the whole table and process it in Perl array of arrays which has significant time impact then process it by rows or cells. And also the write by Range works also.
For some huge tables you can reduce the processing from several minutes to few seconds. The OLE cell access is really slow for huge tables.

Regards,