Cardbuss Cause of No Detection?

Hi,

I have a Toshiba 610CT laptop (mfg abt 1995) that originally had Windows
95. I installed Windows 98SE (removed HD and put "WIN98" folder from System
CD onto C:\ of HD).

I have been using a Megahertz 56K PC Card modem (AOK)

I have a PCMCIA PC card with USB port (adapter) and the Windows 98 driver
for this adapter. Windows MUST detect this PC card before I can install the
driver.

When I boot up the laptop, Win98 does NOT detect it. Even trying a "Add
Hardware" Search via Control Panel does NOT "work". Also, it does NOT
show in the Device Manager's list.

BTW, Another Compaq Windows 95 laptop does detect this PC card!

Is it possible the Cardbuss hardware is the real cause of my problem?

Thank You in advance, John