Root

The easiest way to root HTC explorer:
http://forum.xda-developers.com/showthread.php?t=1415223

I tried it and got root in less than 10 minutes.

Team Viewer

I really love this app!
You start it on your computer and you can access it from everywhere (if you have internet)
Just type the id and password and you are connected.
To use it you must have android v1.6 +
Link

Rooting htc explorer

Here is everything you need to know about rooting the htc explorer

http://wiki.cyanogenmod.com/index.php?title=Terminology
http://wiki.cyanogenmod.com/index.php?title=Overview_of_Modding
http://www.androidpolice.com/2010/04/15/rooting-explained-top-5-benefits-of-rooting-your-android-phone/
http://android-dls.com/wiki/index.php?title=Why_Root
http://developer.android.com/guide/basics/what-is-android.html
http://wiki.cyanogenmod.com/index.php?title=Howto:_Nandroid_Backup
http://wiki.cyanogenmod.com/index.php?title=Recovery_Mode
http://wiki.cyanogenmod.com/index.php?title=Howto:_Install_the_Android_SDK
http://lifehacker.com/5596108/how-to-choose-the-right-android-rom-for-you
http://www.androidpolice.com/2010/05/01/custom-roms-for-android-explained-and-why-you-want-them/
http://forum.xda-developers.com/showthread.php?t=894880
http://forum.xda-developers.com/showpost.php?p=6116001&postcount=2
http://wiki.cyanogenmod.com/index.php?title=Howto:_Install_Kernels

What is that song?

I just started using a great android app called SoundHound.
The app records a part of the song you are listening to and then searches for it in a database.
If it finds it (almost always does) you can see the lyrics, see tour dates of the artist, search in youtube ...
One of the things i really liked is that you can sing or hum the song.
Here is the link to the app:
https://market.android.com/details?id=com.melodis.midomiMusicIdentifier.freemium