steering question

[welshsurfer]

hello all,
while driving along, my steering slightly wanders from side 2 side, not vibrating,just a slight wander which you correct with the steering wheel.
any ideas what parts may be worn, how do i check??
rough cost?? ease of job ??
thanks in advance
CARL.......

[marky]

Check all the balljoints, The Steering Idler arm is a favourite to go