Want to connect my mobile to my pc through wirelsess (ad hoc) and use the internet from my pc?

Hey guys I am using windows 7 and wanted my Nokia E5 to connect to my dekstop pc using a wireless router (creating an adhoc)...I am able to connect it bt I am unable to use the internet (as i my pc is connected to Wired Lan dsl) hoe u guys have understand wht I am trying to say ...Thanku answers will be appreciated