If you are talking about the ID you need to set up your iPod touch then yes, they are the same.
Just sign into your iTunes store, or app store on your Mac with the same Apple ID you have on your HP.
No, if you did you should contact Apple.
Yes you can, using ur Apple ID and password.
The same thing happened to me just now
yes... my sister and i both have an itunes account on the same PC
Apps can be downloaded from the iTunes App Store. You will need an Apple Account and a PC or Mac with iTunes installed. These apps can then be synced to your iPod Touch the same way as you sync music to the device.
You can still keep the same iTunes account.
You should be able to use your iPod and iPod Touch on the same iTunes account on both computers.
If you mean the same iTunes account, then yes. My sister has the same account on iTunes on our home computer as well as her laptop. But if you buy some songs from the iTunes store from one of the computers and you want the new ones on your other computers, you'll have to sync those songs into the other computers' iTunes.
Nothing happens. Both can coexist with the same iTunes account with no harm done.
There is no way you can take application out of your iPod unless you download app again in iTunes using the same account (if it's not same account you will have to pay again so use the same account to get it for free)
Two iPods will work with iTunes on the same account, so there shouldn't be a problem.