I have installed only one SATA drive, a SATA 2 80gb jumpered as SATA 1, on a fairly recent MSI mboard with an ATI chipset. I had similar problems to what you are having, not with XP Home (SP2 included), but with Win 2000 (no SP's included) - I set it up as a Win2000 / XP Home dual boot on several partitions.
I think I can offer some input based on the experiences I had.
In any case, your XP Home CD must have at least SP1 included on it in order to recognize a hard drive larger than 128gb (137gb manufacturer's size).
If your XP CD doesn't have that, there are workarounds for that situation. The process is a lot more complicated and you will probably need to at least temporaily use an IDE drive in order to do that.
It doesn't matter whether you have XP Home or XP Pro or Win 2000 - what matters is whether the CD has at least the minimum service pack included that will support SATA as a bootable drive in SATA mode.
Versions previous to that will recognize it only as a SATA non-bootable drive in SATA mode. However, your bios is new enough that it can be set to treat the SATA drive as an EIDE drive (it probably always is new enough when SATA is built into the mboard), then if your service packs if present on the CD are not sufficient, you can update your operating system to support a bootable SATA drive in SATA or RAID mode after you have successfully run Setup. The SATA drive will boot in any case if your bios is set to treat it as an EIDE drive.
What version of XP Home do you have? I believe you must have SP2, or possibly at least SP1, to support a bootable SATA drive in SATA mode.
(You must have at least SP3 for Win 2000)
"I can't find on the Asus Cdrom SATA 150 drivers for a single drive. As I said before I don't want a RAID array."
The drivers you need depend on the capabilities of the SATA support - if it is capable of RAID, you load the drivers to support RAID, but you do not have to use the RAID features - the RAID drivers also have drivers that enable using the SATA drive in other SATA modes.
Another thing I found in my case is the same drivers were labelled as two different things, depending on whether I loaded them from a floppy included with the mboard, or pointed Windows to the location of drivers on the CD. In your case, the driver you can't seem to find may be the same as the Promise one Windows keeps finding - same drivers, different labelling - if you look inside the *.inf file (in Notepad) for the drivers you downloaded, or the ones on the CD, you may find it has the Promise controller label stated in it.
In any case, if you set your bios to treat the SATA drive as an EIDE - if you don't want or need RAID, you don't necessarily have to load the SATA drivers at the beginning of Setup. If your XP Home does not have the necessary service packs (it must have SP1 to support the size of the SATA drive), this may be your only option - you can update your XP installation to newer service packs after Setup has successfully run, and set the bios to treat the SATA as a SATA after that.
That is how I got Win 2000 (no service packs) to install - with the bios set to treat the SATA as EIDE, I did not load any SATA drivers at the beginning of Setup, and then 2000 found the SATA drive after the loading of the initial Setup files (when I had tried loading the SATA drivers it was not found) - after Setup successfully completed I updated 2000 to SP4 - then I tweaked lines in Device Manager to remove the EIDE emulation, then I loaded the SATA drivers.
