BF2142 kind of lag

hi! just installed bf 2142 on vista and after the map loads up the game is like laggy,but its not lag,just not smooth,stops every 5 seconds,for a ms of second and then it keeps going,i cant explain this very well,but when i play offline the game works great,so fast.so i think its a network problem...?
id like to post a video but i dont know how to do it,do i need a program?i ve never done that,im a n00bie.
once i upload the video you will see..cheers

hi, yes, i did check my ping and its normal,(23)i only get kicked when someone else s using the wireless,so my ping goes up high and well...and you know what i did,i made a manual uninstall of the game and a clean install plus installed latest PB service. uninstalled the sound and graphics drivers, and installed the latest ones,i have to say that the game runs better,but the problem is not solved,it keeps happening,but not too often.
Thanks.