OK, I admit it, I bought a very cheap table saw.

Well, now here's my fiirst question. Assume the table top has no markings,
and my "fence" if you can call it that is just a straight bit of metal that
clamps to the table at either end.

Is there an easy way for me to figure out if my fence is paralell to my saw
blade? I'm not sure how the "propper" table saws do it, but I can't think of
a simple fool proof way of ensuring that the fence is straight every time.
Once i've figured out a marker, I could bolt down a ruler at either end and
them just measure off the same distance each end of the fence.

(actually, the table has a ruler along both edges, but it's just a bit of
printed paper stuck down to the table top, I tried following this and it was
at least 5mm out and deffinately wasn't straight.

Thanks for any advice (appart from throw it away and buy a propper saw.

Thanks.