We need to know:
1] What distro of linux are you running ?
2] More about the "T Mobile Broadband USB Stick 110"
Please plug it in and then tell us the output of lsusb
in a terminal
I just did a search and it looks as though "T Mobile Broadband USB Stick 110" = Huawei E220
Support is built-in for most linux distros now, but here is a link to how to get it working with an Asus EEE:
You may find better links by using these search terms ACER ONE ASPIRE Huawei E220
with your favourite search engine.
Welcome to LQ!