print floating point number

[sparkz_alot]

It's been awhile since I've used MS 7, can you right click on the downloaded file and select "Run As Administrator"?

You should also be able to go into Control Panel --> User Accounts and verify that you are in the Administrator group. If it's not listed, you may have to login as the actual Administrator in order to add you to the group.  While logged in as Administrator, can you install programs?

Note that the Administrator account may be "hidden" (the default) here is one link to show how to activate it:
Activate Hidden Admin.  Make sure you "hide" it again when you are done.

EDIT: I should add, whether posting on this site or another, you should copy and paste any error code in it's entirety, this helps us or others understand what is actually going on. In your case, if you cannot install a file, MS will usually generate an 'error code', which can be looked up online and give you at least an idea of what is happening.