file splitting

I am running a script that puts some data into an excel sheet and that is mailed to my email id....following is the code...

uuencode Creditratings1.txt Creditratings1.xls | mailx -s "Credit Rating Report" foo@bar.com

The problem is the data is greater than 5MB.Hence it doesnt get into my inbox(which has a constraint of 5MB max mail.).
How do i split the file......??????
Kindly give the code..........

praveen.pinto

see man split
for how to reassamble see man cat

I think that has already been answered in another topic head.
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