Smart Bro Modems do not work well with Windows 7 OS, this was what I found out when I bought my new laptop. The Smart Bro HSDPA USB Modem Model MF622 I am using could not be detected. It said that there was failure in installing the driver. Then I found out that the modem is not yet Windows 7 compatible.
To make the modem work for my laptop, I downloaded the drivers from the Smart Bro website.
There are corresponding download links for each modem: MF622 (New Version), MF626 The Dark Knight edition (New Version), E226 Version. You can also download the drivers for Mac OS.