In terms of hubs/wheels, I'd suggest going onto Chain Reaction's website, and looking up their custom wheel build options..
You don't have to buy it, however the selector allows you to mix & match various hub/rim/spoke/cassette options which means you can then see roughly whether it will break your particular bank or not..
Strange as it may sound, but eBay is worth a look as many people seem to swap out the original wheels that came with their brand new bikes. If you're lucky you can get a set of WTB Laserdisc or Bontrager Racelight rims on Deore hubs, with disc mounts and/or rim surfaces for £60-80 a pair, having done maybe 20 miles total! I found some which even included tyres and tubes, making an absolute bargain..
What 'old' frame do you have, by the way, and what riding are you intending?
Difficult to recommend rims or hubs if we don't know what you're planning on doing to them!
2013 On One Scandal | 2011 Ghost ASX 3700 | 2008 Magura Test Bike | 2006 Raleigh RS950
1999 Voodoo Hoodoo | 1999 Raleigh RSP 450 | 1997 Giant ATX-D 990 | 1997 Ghost X-700
1995 Giant Cadex MCM-3 | 1995 Voss Ti | 1993 Giant Cadex CFM-2 | 1992 RS Topline Mammoth