Hey i just downloaded fomr Dubstep refills of the internet, but when i use dr. rex or any synth i have. i can never find the files. im in the correct directory but they do not show. the file i downloaded is meant for reason. so is there somethign im doin wrong?

HI Im with reason about 4 years up to now and I never hear about such a thing like this, are you sure those refills are for reason??

I've definitely heard of this and the only reason I can think of is that you have a refill that is a version later than the one you have, eg. you have a reason 5 refill that can't be opened on Reason 4 because the format is updated and changed.
Also some refills for Reason 3, don't work with Reason 4.
Now if it's a refill for version 4 and you are using version 4, then it maybe that the refill is either a cop-out or it's corrupted format.