[Roy Dennis]

First of when you purchase a regular CD+G disc it is recorded on an audio disc as a completely different type of file to what you get when you download. Downloaded files are normally a pair of files, an mp3 file the audio and a .cdg file that contains the lyric, these are usually contained in a zip folder, so each zip contains these 2 files. You can store copies of these files on a data CD but they will not import into Hoster from the import CD files section like a regular Audio CD+G disc would.
So you have to use the Import HD files option.
If you wanted to be able to import them as you always have from a Audio CD+G you could burn them to an Audio CD first using Microstudio which would convert the Zip files into Regular CD+G files providing you had an appropriate burner.

So well skip that idea unless you ask for more info on it.

Now you say you managed to import them OK so I wont go over that, but don't know how to change the Disc ID, that is because you can't change a Disc Id or a Book Id once it's been imported.
The only way is to go into Hosters edit dialog, select the multiples tab and delete all the files from that Disc ID and re import setting your desired Disc ID before pressing the import button.

Now you don't state which version of Hoster you are using, there are slight changes in importing with different versions.

When you import these files you have a choice of importing them as kma or kmh files.
Now if you import them as KMA files it will create a completely new file on your computer containing both the mp3 the cdg plus a lot of other data. and you wont need the original downloaded file apart from as a backup.
If you choose to import as KMH type then you need to keep the downloaded file in a folder along with a small kmh header file that Hoster creates contains all the Hoster data, that file must remain in the same folder as the downloaded file.

See how you get on with that, if you want more info on the importing come back but let us know your version of Hoster.