I need help converting from .ods to .xls?

Can someone help me convert a .ods file to a .xls file? The internet restrictions where I'm at won't let me get to online media conversion sites. If anyone can do this in a jiff, PLEASE email me! I have 2 files that need to be converted.
Update: Bryan_Q: it's not ".ods", it's ".odt" - You are clearly not smart enough to know what I'm talking about, it is .ods. I think I should know, I'm looking right at it. Also, if you are going to not answer a question, don't write anything.