Two Inquires

First: Is there a shortcut for me to be able to delete every other line in
an excel
document. The information on every other line (3,5,7,9 etc) is redundant
and I'd hate to have to delete them line by line.

Second: When I delete the redundant line, some data from the main line
disappears too. I can't have that happen. (that is, if I delete line 3,
some important
data on line 2 disappears)

Please advise. Thank you.
--
Templar