I use an oscommerce system (2.2-MS2) to an e-shop which shares two domain names ([url removed, login to view] and [url removed, login to view]
Please feel free to visit them.
Actually it has one backend for administration and two store fronts based on a contribution called Multi-Stores multiple shop system.
By the way this contrib runs very good.
The admin link for both is at [url removed, login to view] and I can give you access to check if you wish
I have also installed a few other contribs to that store and I face some errors because some of the contribs are not made for the multi store contrib or for others.
Some of the contribs I currently use are
Who is online
Remove unused images
Header tags SEO
And maybe some other that I forget now.
In general the shop works very good for quite long time but with a few minor issues which can be noticed only to the administration side.
Such issues are
-Sitemap does not function well.
-Whoisonline contrib, suddenly lost the flags and I do not know why
-Remove unused images contrib finds the unused images but it does not work good with the path because of the multi store contrib
I also need to add a template I purchased, to add some extra functionality (like AJAX AttributeManager v22.214.171.124) and things that we can discuss a little bit.
I am experienced but not a real programmer, so I cannot overcome 100% those on my own, so I need your help, as long as you feel comfortable to deal with what I described.
Please have a look around at the [url removed, login to view] about the contrib I mentioned and let me know. I can go with a reasonably priced solution that will be applied to the shop without taking it down at all. My initial goal is to fix the existing shop and I do not think I would prefer to reinstall a shop because I feel that it would give me very hard time transfering all the database to the new one.
I look forward to some suggestion and fee scheme from you.
If you need to talk to me, we can skype.