Me, I'd disable all except the Realtek mixer control.
Keep the ESET Security obviously.
Everything else could probably be removed (WHat's the Microsoft WIndows Opera...?).

Some of them services are tiny and will take next to no resources.
Having no Sound Control Interface etc to save a few MB of Memory.
You are better turning of a lot of stuff in Control Panel > Admin Tools and choose Services.
Never touched anything in services. Can you give me abit more info on them?
Good idea is to take screenshots of your services screen as you go so if you do disable something and it causes you problems you have a point of reference.
