🚀 go-pugleaf

I have recently installed an adaptec AHA2840VL SCSI host adapter.
However, it seems that Warp is failing to recognize the card.
Following are the scenarios:

1. With the host adapter bios enabled, during boot time
the card is recognized and the "AHA2840 ...." banner is displayed
allong with the message to press ctrl-a to invoke the scsiSelect
utility. However, almost immediately a message is displayed
saying "can't locate host adapter" "Bios not installed".
Following this message Warp does boot successfully, however
RMVIEW shows no trace of the host adapter (as well as the 
selective install window). 

2. SInce currently I have only a CDROM drive connected to the 
adadpter I was suggested to disable the host adapter BIOS. I did
that, however, Warp still did not identify the adapter. 

My questions are:
1. Why is warp failing to recognize the 2840 adapter? How can I
make it to recognize the card?

2. The default IRQ for the adapter is 11. Although this IRQ is
free on my machine but the documentation (whatever skimpy I have)
 suggests  that I should use IRQ 15 for the SCSI adadpter. With
the bios disabled I am not able to invoke the scsi select 
utility (which seems to be the only way to change IRQs on this
card). So, is there any way to change the IRQ settings on this card.
(BTW: Since I bought this card as an OEM version, I dont
have EZ_SCSI or CorelSCSI with me).

Any help will be highly appreciated.
Thanks
Sudipta Bhawmik