|Were any of the drivers listed on HP website supposed to be applicable to WIN7? or were they only for Vista/XP etc?|
If HP isn't able to assist then you may be able to identify the particular wireless NIC ( if it was made for HP by an outside vendor) and search there for a Win7 compatible driver. Worst case if you cannot get the onboard wireless to work is buy a Win7 compatible USB wireless NIC.
Goin' Fishin' (Some day)