First access the BIOS using the F2 key for the Dell Inspiron 6000. See if it recognizes your and assuming you have one, the CD drive. Try to set the HDD as first boot device CD drive as second. . Save and exit. The Inspiron 6000 is subject to the 48bit LBA limitation so it will only see the first 137GB of any drive installed. You did not tell us what drive you have, so if it is larger than that, use a program like fdisk to make multiple partitions that do not exceed that size. Of course if you are using windows XP, you must have it on either CD or USB, most common is the CD version ;-)
Start your computer with the Windows CD and run the installation. I do believe that windows will also give you the options to partition your drive, so you will not have to use fdisk. This should install windows as well as partition your drive. The other issue here is that the Inspiron drive connector is a first generation IDE so make sure that your new HDD is compatible with that. Hope this helps, if not let me know and we can try to further help you.