How do I install on a second harddisk

[chris]

I have an 8GB hard drive with old version of redhat
I have a brand new 160GB with 4 partitions.  I'd like to eventually 
format what's now "hdb1" as a swap partition and instal ubuntu on 
"hdb2" "hd3" and "hdb4" (the 4 partition set up: swap, root, user...).  
Currently these are formatted as ext2, because the version of redhat I 
have couldn't format them as riser or ext3.

Do I need to "fake" a few files (as in use touch to create a few zero 
byte files with specific names) so install can overwrite.  Or can I use 
install to write to the slave disk at all?

Thanks,
	Chris

In case you haven't guessed I'm pretty much of a newbie