Trial Ms Office Product Key:

I'm a cancer patient who suffered a stroke. I had downloaded the Microsoft Office 2010 trial but thought we could not afford it.  My kids use it when they come home on weekends from school.  They bought me a new HP computer which had the MS Office 2010 on it.  I purchased the 2011 update card with a product key.  I didn't understand that you had to have the product code from 2010 and I delected the MS Office 2010 thinking I would just go to the Office website and enter the new product key.  I'm older and not used to this and with my illness have some problems.  So I can enter the 2011 product key, I need the trial version again according to the store and microsoft.  Can you help me?  My email was under [email protected] or [email protected].  I rely on this program because I am a "shut in" at this point.  We can't download another trial to get another trial version. PLEASE HELP US!!!!