Email change question

Here to ask is it difficult to change the email of my account and if it isnt how long will it take and how long will i be unable to play? Also if it isn't impossible if someone could please tell me how if you would be so kind.

http://nxcache.nexon.net/nexon/customer-...ctions.pdf

Fax that asap. The number is legit, don't worry. It'll take about 3-4 weeks.

crap im not sure about some of those. Hate my parents for doing this pomegranate.