Again, that’s the kind of nonsense that an incompetent IT guy would promote. Windows sends the text to the printers as a vector graphic, which means that they can print ANYTHING… as long as you use the right font, and the text is properly codified.
If you’re mixing Chinese and Spanish, you will need to use Unicode. This is the kind of error that you see when you can read western characters but Chinese appears all garbled. Use Unicode-8 (utf-8) and these problems go away.
Again, some fonts don’t have accented characters. If you use a Chinese font, it might happen that it doesn’t have the accented characters to display. If you use ANY font that supports basic latin unicode, like any basic Microsoft font (Calibri, Arial, Times New Roman…), the only thing you have to do is what I tell you: go to the regional options, languages, then change the input keyboard to Spanish. You’ll get the º, Ñ, and accented characters.
If you’re using a US/Chinese keyboard in that manner, though, you’ll lose the < > keys (usually between the Z and the left shift key), but for writing normal text, that’s a minor inconvenience compared to the ability to write accented characters.