You will need a bootable floppy disk.
Start-settings-control panel- add/remove software- startup disk.
You may have to copy fisk.exe and/or format.com from c:\windows\command
To install the new drive as your C: Drive it will need to be jumpered as Master and Cabled to the Primary IDE Controller.
You may have to configure your bios to detect the hard drive if the bios is not set to auto
If your bios and/or operating system won't recognize all of the 30 Gb you have two choices.
1.use the bios translation utility that most drives come with (not recommended)
2. install bios update either chip or card.
Once your bios sees the whole drive-
fdisk and create one large partition or mutliple smaller partitions.
format the partitions.
boot with cdrom support and reinstall your operating system and software.
connect your old drive to the secondary controller. create an olddrive directory off of your new c:\ and xcopy your old drive there to have access to all your old data. You may then remove the old drive or leave the drive installed and use the storage. I recommend putting the old drive on the secondary controller to avoid conflicts with the new drive.
e-mail me if you have any more questions.
Good luck
I recommend a new load of your operating system because it is cleaner and you don't carry all of your old baggage from your old hard drive.