Most minipci wi-fi cards are easy to swap out and usually they are in a slot accessed from under the notebook (which does not require you to remove the keyboard from the top and access the internal motherboard and electrical system).

So, yes, if this is your problem and the new minipci card is all you need to solve it you should be fine doing this.

You need to go to your dedicated user website at zd7000forums.com and either do a search for this topic (replacing or updating wi-fi card) and/or post a question there yourself.