Hello,
Is it any possibility to use Huawei E220 3G modem on Haiku?
It is most likely encrypted. You need to enter a code, at least on mine here. Hopefully it will be supported in Haiku soon.
Axel Dörfler will work on improving wireless support, see: http://www.haiku-os.org/news/2010-07-14_opportunity_pay_axel_code_haiku