Modifying mobo BIOS to make sata card bootable

I bought a cheap pci sata card off ebay that has the via vt6421a chipset and I'm guessing it is unbootable as the card is not recognized on bootup. I have set the boot order to SCSI and installed drivers through F6 in XP setup to no avail. I read up on this and found that these cheap cards usually do not have a BIOS on them. I decided to try to flash the motherboard's BIOS with a sata rom integrated to the motherboard bin file as I have read many others have done with success on this particular chipset.

My motherboard is a MSI 6701. It has Phoenix/Award BIOS and I used cbrom.exe to modify the .bin. My problem is I don't have enough space in the .bin file to integrate the .rom. It says there is not enough space (over 4025h bytes). I want to know if there is anything I can delete to make the rom fit. Here is a picture of the dos prompt window I'm working in: http://img197.imagevenue.com/img.p [...] _761lo.JPG

I can remove the EPA logo but that's less than 1K so it doesn't really help. I think I read somewhere I can remove the pxerpl.rom module but I'm not sure. It looks important. I included links to all the files I used.

cbrom: http://users.cybercity.dk/~dsl6178 [...] _files.zip (use cbrom.exe)

vt6421 rom: www.viaarena.com/downloads/drivers [...] _V410a.zip (6421V431.rom)

motherboard bin file: www1.medion.de/downloads/download.pl?id=141&type=treiber&filename=biomd5kv12.exe&lang=uk (W6701MLN.218)

I hope someone can help. Thanks.

Yea usually if there's no BIOS then nothing can be done, but in this particular case people have been able to do a hack and insert the sata rom for this chipset into the motherboard bios by way of a firmware update. It's risky I know but numerous people have reportedly done it on this chipset which is commonly sold on the internet inexpensively and without a BIOS. I was hoping if someone experienced with motherboard BIOS and bin files could tell me what files I could keep or not keep.