Please capitalize where necessary: before you can open a mcx file, you'll need to figure out what kind of file the mcx file extension refers to.
A: Before you can open a MCX file, you'll need to figure out what kind of file the MCX file extension refers to.

Q: phthalic anhydride 2917 35 00

A: Phthalic anhydride 2917 35 00

Q: the castles were the most noble of the buildings built as holiday resorts for the upper class.
A: The castles were the most noble of the buildings built as holiday resorts for the upper class.

Problem: ""why in the world would so many people spend so much time writing free articles and getting them distributed all over the internet?""
Can you repeat this sentence, but capitalize it?
Answer: ""Why in the world would so many people spend so much time writing free articles and getting them distributed all over the Internet?""

Text: the strategy focuses on the areas where joint nordic efforts to implement sustainable development have high priority.these include climate, biodiversity and genetic resources, the sea, chemicals and food safety.

Correct capitalization: The strategy focuses on the areas where joint Nordic efforts to implement sustainable development have high priority.These include climate, biodiversity and genetic resources, the sea, chemicals and food safety.

Problem: program modification: sometimes, not only virus worm:win32/bagle.aag or malware registry easy but also common softwares possessing the ability to modify the inner functions of dswave.dll, which means other programs can't find this dll file again.
Can you repeat this sentence, but capitalize it?
Answer:
Program Modification: Sometimes, not only virus Worm:Win32/Bagle.AAG or malware Registry Easy but also common softwares possessing the ability to modify the inner functions of dswave.dll, which means other programs can't find this DLL file again.