Hey there Hardlock
wot i wantt o know is can i instal these and still keep windows and docs on the old harddrive but put ma games on the RAIDed hard drives
Yes you can do this, however I am not sure if you will notice any speed differences because your OS/drivers e.t.c will still be running on the old (IDE) hard drive.
But yes you can connect the SATA drives and run them as a slave in your system and use it to install games to.