Hi JW, good to hear you got the route working. Some of the common stock that is used on the route I've listed below (have made the list modern day stock since it's supposed to be a modern day route!

):
South West Trains Class 442 (running express services from Waterloo to Weymouth, Poole and Southampton)
 | |  | South West Trains Class 442 [802896 bytes] - SWT442.zip File ID: 5368 Date: 29 Jul 2005 - 10259 Downloads |
|
South West Trains Class 170 Turbostar:
 | |  | South West Trains Turbostar [2086153 bytes] - swt170.zip File ID: 9128 Date: 21 May 2004 - 10139 Downloads |
|
SWT Class 159 (159018):
 | |  | Class 159018 [SWT] [4122664 bytes] - Class159018_SWL_Bin_Installer.zip File ID: 10493 Date: 13 Feb 2008 - 10109 Downloads |
|
SWT Class 450 Desiro EMU:
 | |  | Class 450 SWT Desiro - from Making Tracks™ [4439638 bytes] - Making_Tracks_Class450_SWT.zip File ID: 12416 Date: 09 Jun 2005 - 14181 Downloads |
|
SWT Refurbished Class 455 EMU:
 | |  | SWT Class 455 Refurbished Set [3458798 bytes] - SWT Class 455 Refurbished Set.zip File ID: 13199 Date: 08 Oct 2005 - 5187 Downloads |
|
First Great Western Link Class 166 DMU (Basingstoke-Reading services): 195 or available from this link....
http://forums.uktrainsim.com/viewtopic.php?t=52338
Wessex Trains Class 150/2 (Weymouth-Bristol Services as far as Dorchester West):
 | |  | Class 150 Wessex Trains (reworked) [7416421 bytes] - wessexsprinter.zip File ID: 8911 Date: 23 Apr 2004 - 6282 Downloads |
|
Virgin Voyager Class 220 'Springfield Voyager' (VXC Bournemouth-North of England services as far as Reading):
 | |  | Class 220 'Springfield Voyager'- from Making Tracks™ [8499229 bytes] - Making_Tracks_Class220_Springfield_Voyager.zip File ID: 12414 Date: 09 Jun 2005 - 12064 Downloads |
|
and then if you wanted to go back in time a few months or so....
SWT repainted Class 421 (these have all been phased out now...they had comfy seats!

):
 | |  | SWT Class 421 (EB Repaint) [620157 bytes] - swtcig10.zip File ID: 12960 Date: 31 Aug 2005 - 3253 Downloads |
|
Hope this gives you some stuff to work with!
Ed