I don't believe it!

I have a 2 story house I bought 11 yrs ago. Heat and A/C was replaced approx 13 years ago. The previous owners told me the heat and air upstairs has a 'regulator'. There is a separate thermostat upstairs that I can control heat and air with, or turn it off. I usually keep it set at the same temp as downstairs so the house maintains even heat and cooling.

I noticed a couple of days ago I have no a/c upstairs because the

'regulator' isn't working. I don't know what a regulator is in the first place.

My question is, can someone tell me what it is and if so, will it be expensive to replace?

Thanks!

How can I undelete or get back the youtube icon that came on my iphone 4s.

I don't even know when I deleted it for sure. Its gone and I would like to know how I can get it back.

I went to app store, but did not see the icon I had when I bought it just a couple of weeks ago.

Thanks for any help you can give me!

The rope on my pole saw came loose. I don't know how to restring it because I didn't pay much attention to it before. Can someone give me step by step directions? I have searched the internet, with no luck. Thanks in advance!

I took pics of these while in Corpus Christi, TX. They are everywhere and so beautiful. I would like to know the names of them.

Thank You!

http://i.imagehost.org/0372/photo-1.jpg

http://i.imagehost.org/0322/photo1-1.jpg

I went to photobucket, but couldn't figure it out. Please help. THanks!