[CentOS] USB / MiFi Mobile broadband devices and CentOS 5 (32-bit)

Has anyone had any experience with the NetZero Stick? The NetZero site 
says that it is 'Linux' compatible, but gives no detailed information (eg 
distributations, kernel version, driver name/version, etc.). 

I am running a stock CentOS 5.11 kernel (2.6.18-398.el5) on my 32-bit laptop 
(IBM Thinkpad X31, with a non-PAE processor, so upgrading to CentOS 6 is not 
an option, and no, I don't want to install Ubuntu on this machine).  I don't 
have any flavor of MS-Windows installed.

My other options are the NetZero Hotspot (a MiFi device) or Virgin Mobile's
Netgear Mingle Mobile Hotspot (another MiFi device). NetZero does not list
Linux as a supported O/S, nor does Virgin Mobile -- I am not sure what that
means, since the MiFi device are pretty much just like a typical (wired)
wireless router, except instead of a Ethernet uplink (eg to a DSL or Cable
Modem or something like that) it has a celluar uplink. I am *presuming* that 
these MiFi devices are configured via a web interface (eg http://192.168.1.1/ 
or some such with some default username/password).

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