Read-only file system HDD after boot from CD

I am sorry to post a simple question.
I have failed to find the answer in the FAQs or this Forum.

I boot from a Knoppix Linux 3.2 CD
My FAT32 HDD is not writable.
I set it read-write by way of the desktop icon for it and properties.
I run sh
I cd to a directory which is writable in Windows.
I try the simple command
echo > hello
The response is
Read-only file system

I am really new to administering a system.
I infer that a script is run while booting.
I assume it is possible to jump to a script on the hdd if I want to alter it.
What should I read?

Open a console window and sudo mount /dev/hd?? /mnt/hd?? to mount the windows drive with root permission.
[edit]
Replace the ?? with the number of the partition and the drive you want to write to.
[/edit]

that doesnt work!!!

Exactly what doesn't work? What do you type and do, what messages do you get back?

Try the tips from the following topic:

http://www.knoppix.net/forum/viewtopic.php?t=1279

i tried those tips and i can write to the hda1. but i cant edit /etc/init.d/knoppix-autoconfig cos its read-only.
any suggestions?