Found that Skype is very cheap to get a landline number. Is it possible to run two numbers? Got a mate in the states and he's love to phone but only has a mobile. meaning it would cost a bomb to ring a UK number

Skype to Skype is free, so get your mate to get a Skype account, too.

He has Skype but obviously has to be at the pc. What i want is a US number as well as a UK one so he can phone my Skype on his mobile

Have a look at http://www.truphone.com

I have google talk installed on my pc and the truphone app installed on my nokia mobile.

works very well. when l am at home, people can call me on the truphone app that has an 07978 xxx xxx number, or on google talk if l have my PC on. if your friend is the states he would get a US number when he registered with truphone.

When l am away from home with no wireless access the 07978 xxx xxx automatically diverts to my normal mobile number. However if l am in a wi-fi hotspot it can connect as if at home.

truphone to truphone/google talk/sip calls are free. As well as 0800 numbers.