Wow, thanks for the quick responses.
OK, first I forgot to mention that the neg is a 120 negative 6x6 from a Bronica GS-1. The negative is pretty thin, but looked great when I scanned it. I was trying to print it on an 8x10 sheet, but don't have an easel setup which might be part of the problem. I was having a very hard time seeing the image when focusing with the contrast filter slid in (the tray that I mentioned which is below the negative, on the focusing stage).
http://farm4.static.flickr.com/3050/3057768272_cc915c685a_b.jpg this is a scan of the negative which I was trying to print.
I have to check what the filter is, and i just figured out that I had left the first sheet with the focus on for about 10 seconds or so, which is probably why it came out black when I exposed it again by accident. Hard to describe the steps I took but I know why the first one was not good.
OK, also figured out that the polycontrast filter is what is in the slide, and with that out of the way, and a thin negative, why I was totally overexposing the paper.
So, the slide I mentioned is the contrast filter holder, and it sits right above the lensboard, and can be slid in and out. Presumably this is to enable changes to the filter, and not for exposing with the filter out of the light column. Duh. I thought it was some sort of safelight for focusing, which is why I left it on for so long with the first exposure.
I must be using the wrong lens for a 120 neg, I had a devil of a time trying to get the image to look correct on the paper. Lots of vignetting ect, basically the image would not fit onto the paper any which way I tried it.
It would probably help if I had a manual for the enlarger, but alas that did not come with it.
Thanks for the starting points for your enlargements, I will try those and get back to you with some results.
Cheers,
Sean