Wireless not connecting ubuntu 11.04

Hi, I recently installed Ubuntu 11.04 on my desktop and everything is running perfect, except for the internet, in this desktop I only use my wireless connection an ubuntu is not detecting the wireless networks, I searched and I tried to install the drivers but in the System>Applications>Hardware menu there were no drivers at all.

I'm new to ubuntu so please try to explain as simple as you can, this is what I got with sudo lshw -C network:

*-network
description: Ethernet interface
product: AR8132 Fast Ethernet
vendor: Atheros Communications
physical id: 0
bus info: pci@0000:01:00.0
logical name: eth0
version: c0
serial: 70:71:bc:d2:96:f3
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair
resources: irq:44 memory:feac0000-feafffff ioport:ec00(size=12
*-network DISABLED
description: Wireless interface
product: RT3090 Wireless 802.11n 1T/1R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 00
serial: 1c:65:9d:9d:b4:c3
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt2800pci driverversion=2.6.38-8-generic firmware=0.11 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:febf0000-febfffff