Pardon the improper terminology in advance...

I went for my first 'real road ride' yesterday, on my inherited road bike (as opposed to the mountain biking and townie biking I've done on and off for years). Had a blast, except for the multiple falling down from a standstill because of not getting out of the Look pedals properly. (3 times...ouch...hurt my ego more than my body.)

So, having admitted that, I noticed that the stem (and therefore the handlebar) is out of true with the front wheel and fork. Front wheel and fork are fine with respect to each other. Is this something I can and should realign myself? What do I loosen and tighten to realign this? Or is this a 'torquing' kind of thing, and should i just bring it in to my newly visited LBS. They just did a major tuneup of this bike last week to get it going again after years of storage. I need to go back anyway for a mild tweak of the derailleurs which they invited me to do.

Thanks for any feedback,