can't connect to wifi

hey all, i'm not very tech minded so bear with me..

i just got naked wireless installed yesterday.. my phone connects right away and is working fine.

when i click to connect it, it tries to connect but doesn't do anything.
when i click the repair bit, it gets to 'renewing your ip address' and stops and says it cannot be completed.
i have connected to other wireless networks before, but haven't used wireless for about a year or so.

i go the laptop refurbished, and it came with this notepad thing if this helps..

IBM R60
C2D T5500
1 GB RAM
160 GB HDD
DVDRW/WIFI

000029-7HWU16-GBHD4R-MGD91H-40Z2PV-KYG17W-6UBN10-FA9Q6N-KT756W-KN64DA-3EWQY8
AVG PC TUNEUP 2011


i'm not sure how to get any more info about the computer..

sorry for my lack of info.. and thanks in advance.

oh and it's a lenovo r60