How do you delete ringtones that you added with Ringtone Maker from iTunes?

I seem to have problems with the battery of my iPhone (version 4.2.6 and my modem firmware is 1.0.05).  When I went to work I had 98% battery.  I had no service and I am on EDGE network.  After 6.5 hours of moderate usage, my battery went down to...

I was communicating with my dad via iMessage, but later on it seems that some were being sent as text messages.  Can I force iMessage exclusively for him?

Everytime I turn on my iPhone 4S, it always prompts for my password in iMessage.  Is that normal? 

How do I configure the settings so that it will stop asking for my password?

I have downloaded some apps for my iPod, but when I open them, nothing happens and it just goes back to the home screen. Is there some bug in the iPod or is it with the download?

Which Bluetooth headsets work with iPod Touch (4th generation)?  I want to use it for U streaming and I would like to use the mic from the headset.  The forums I have read are about older generations.

I have just bought a new iPod Nano (6th generation) and I can’t load my songs in Winamp.

It was previously working with my last iPod. 

What’s wrong here?

If we are going to compare the performance of Raid level 1 between Raid level 0, which of the two have achieved the best performance in terms of read requests? Please discuss it further, how they differ from each other? Thank you.

I bought a second-hand iPod Shuffle (4th generation) from a friend, which, as he claims, is in perfect condition.  He sold it because he did not have a charger or a cable. 

I purchased a USB cable from Amazon and when I tried to connect the iPod to my computer,...

How can you control the iPod Shuffle (3rd generation) using the remote control?

There are only three buttons – volume (+ and -) and the clicker at the center.