I'm looking for a good web hosting solution provider. I can afford to pay up to 50 USD a month initially.
I would require the server to be windows 2003 / 2008 (2008 preferred), SQL Server 2005, .NET 3.5, and the rest of the standard services.
Is there is a good web hosting provider to meet my needs, or other research that could help?
You're not going to get a lot for $50/month.
It limits you to two realistic choices:
I don't want to sway you between the two because they really have their own benefits. In a decent shared environment, you should have more resources available. You'll get better storage and RAM because they share them between users on the server.
A VPS will get you complete control over your system but resources are fixed. You also have the (considerable) overhead of having to run your own copy of Windows, IIS and SQL server in your slice of RAM and that won't leave you much memory for running sites... You the other edge of the sword of flexibility is you have to administer and maintain your server.
If you can find a VPS that offers shared SQL hosting, that might be a good compromise.
I would generally advise you to try a good shared host. Hostek is one I've been using for ASPNET sites... They're a lot cheaper than what you're looking for but ask them about semi-dedicated (shared server with a fixed, low number of sites on) plans they can offer.
If that's not enough, you might have to rethink you budget and go for a mid-end VPS.
Hey, I think I posted about this a while back, give it a look.
http://stackoverflow.com/questions/303579/affordable-windows-host
You need to provide more information .. It's impossible to know if you'd be happy with shared hosting or will need a virtual private server .. there are some things you can do with the latter that are disallowed by shared (like using irc, or getting a shell login).
What are the characteristics of your web site ? expected users, bandwidth etc .. ?
In the USA, I've been happy with the array of products from HostICan .. fwiw. But you are in the Arab Emirates? Can't say I am really on top of the solutions available to you in your area...
I suggest you to have a look at web hosting directories like Web Hosting Companies List and analyze yourself which hosting plan suits your needs.