Actually i'm the mug not you Strephon! Ive just checked again and that second link with the manifest i imaged is not for Win7_64 at all. It's for these earlier products as shown in this list below the files manifest:

Properties
Article ID: 957924 - Last Review: August 21, 2012 - Revision: 2.0
Applies to

Windows Vista Service Pack 1
Windows Vista Business
Windows Vista Enterprise
Windows Vista Home Basic
Windows Vista Home Premium
Windows Vista Ultimate
Windows Server 2008 Datacenter without Hyper-V
Windows Server 2008 Enterprise without Hyper-V
Windows Server 2008 for Itanium-Based Systems
Windows Server 2008 Standard without Hyper-V
Windows Server 2008 Datacenter
Windows Server 2008 Enterprise
Windows Server 2008 Standard
Microsoft Windows Server 2003 Service Pack 1
Microsoft Windows Server 2003 Service Pack 2
Microsoft Windows XP Service Pack 2
Microsoft Windows XP Tablet PC Edition

It's an x86 installer so it will look for for the System32 folder not SysWOW64. Regardless it'll need to see a previous installation of VB6 SP6 because i think it's only an update, and if you don't have the earlier install it will baulk anyway. But if you need any of the files it contains you can dl the msi from here:
Spoiler: CLICK

Code:
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Extract it with 7zip or similar and then as posted earlier by both dirtbikermp3 & Strephon Alkhalikoi, manually register the required file. To do that, first paste a copy of the required file (e.g. comdlg32.ocx) into SysWOW64. Then open a command line window and run this command:

regsvr32 c:\Windows\SysWOW64\comdlg32.ocx

If you have UAC turned on, that command needs to be run as an elevated command prompt.

I have a vague recollection of doing just that after 'pinching' some files from my XP installation for Win7 earlier this year, and comdlg32.ocx may well have been included. If you want only that file so you can use haute's universal patcher, here's the version modified 16th Feb 2010 from VB60SP6-KB2708437-x86-ENU.msi:

[Only registered and activated users can see links. ].


Sorry for any confusion.