Yes.
Yes, you can
The most likely reason is that the drive was formatted with a Linux file system. Reformatting the drive to NTFS or FAT32 will make the drive usable in Windows. You could also install an ext4 driver in Windows to access the drive without reformatting it.
Insert your Windows CD or DVD and get to the part where it shows all your partitions and delete the Linux partitions. If you are unsure which one is your windows partition just make sure you don't delete or format any partition that is in the NTFS, or in the rare case a FAT32 format, as those would be your windows partitions.
yes you very well do that.when come to the setup portion choose the repair install.then install now.
Did you format your hardrive? If you did than windows isn't on the machine anymore. You will have to install the OS again.
If your restore requires a windows disk then you cannot restore without one. Most do not require a windows CD. Most include the windows files in the manufacturer restore.
There are several partitioning products available that are easy and intuitive to use.
Yes, if you have copied all installion files on your hard disk. If you haven't you cannot reinstall Vista.
No. Windows ME cannot boot off of NTFS partitions, and it cannot read them without special software.
The only possible way to do that would be to purchase a Vista disc and run from that.
If you don't mind losing all of your files then yes, it is ok.
you would have to buy something like partition magic from norton it allows you to non-destructively manipulate the partitions in your computer, unlike windows own partition system that runs from the windows installer.