if i install ubuntu latest version will there be any problem with the wireless connections
Without knowing which wireless card you have, I cannot possibly tell. However, AFAIK, Ubuntu has some support for common restricted drivers.
Ubuntu will boot from the CD into a live session before you install. If the wifi is supported out-of-the-box, you'll know right away. However, ubuntu also has easy access to many drivers.
You will still need to use lspci though.
iam from middleeast.here linux users r very less.
BTW - edit your profile
to show where you are from. I'm sure you don't want people to think you are a USA n00b... if you are from someplace where net access is frowned upon, or something like that, you don't need to be specific.
Linux User Groups in the Middle-East...
... there are lots of linux users across that whole area - depends where exactly you are.