Is your input supply +/-15V or +/-30V? 
Ah, yeah. That voltage source model is one I grabbed from Yahoo usergroup. Very handy but ambiguous. It's +/- 30V. That's a rough calculation based on my transformer measurements from a little one I grab from an old BKPrecision pulse generator. Now I'm contemplating on using a bigger transformer that I salvaged from an Onkyo TX-21. It's a tank with one primary and two secondary windings. The configuration is a bit confusing as I've not seen a transformer with this particular layout, but my measurements show that the largest secondary has 25V-0-25V which comes out to around 35ish volts. I think I really want to use it versus the little one from the BKPrecision.
I'm thinking I could use the main secondary for my adjustable source for the LM317/337 pair and the lesser voltages to run a fixed +/-12V, +/-9V, +/-5V for quick school projects with no fiddling. This started off as a somewhat quick build for school, but now I've kind of committed myself to make a decent PSU that I can be proud of and use with all my projects. I have a Tektronix PS282 (linear) 0-18V 0-5A and a BKPecision 0-18V 0-5A (Switcher that I use for LabVIEW projects) but I don't have anything dual pole.
I'm planing on housing it in an old EVGA PSU housing that has the right amount of space and a huge fan on top to keep things cool as there will be intense thermals with 8 regulators. The other regulators for the fixed voltages are TO-220F packages so I figure I can mount them on the chassis for heat evacuation.
All this is speculative as I am a rookie to designing electronics systems so if I said something stupid or incorrect, please correct me. I wanna be great at this so my pride and ego are in my pocket.

See transformer pics below.
P.S. Tomorrow I will have access to ICs and other components (standard stuff but mostly new old stock, some REALLY old stock) so if anyone has some suggestions for other parts other than the LM358, please let me know as I can grab them while I'm there. Thanks again.