Windows 7: How can I figure out the size of a program?

Hello all, I am working on my backup PC, an XP machine with a small 80gb HDD. I just re-installed the OS to cure the BSOD and I am trying to decide if I want to install the old Corel Word Perfec 12, or the LibreOffice program I have installed on my new Windows 7 machine. What I am looking for is a way to find out how large (in MB) the two programs are without actually installing them. The smaller of the two will get the nod.

1) the disk with Word on it
2) the LibreOffice



thanks for any help!

First if you go to each ones website it should tell you how large the program is once it is installed
When you download it or even on the cd it comes on, it could say one size but when it expands as it installs it could be much larger.

On the Windows 7 Machine where you have libreoffice, you can go into Program and Features and it should tell you there the size of the program

Well, my other PC is not hooked up right now, so i am trying to work with the backup computer.

Then try their websites. They should tell you the size. Their might be a contact number on the website where you can email or call to find out