A little mulitbox help please :)

Ok i know im thick so bear with me.. :P

I have my 2 pcs set up now and have multibox working on both, my question is this how do you guys control both characters on 1 keyboard,

I mean on the main keyboard do you allocate maybe the numberpad to macros for the healer and keep the rest for the warrior.?
So when i press maybe numpad 1 this makes the healer heal my warrior.

Do i need to unmap the numpad buttons on my warrior that the priest is using?

I know this is probably a very simple thing but like i said im a bit slow but you dont get nowhere by not asking, :P

Exellent just what i was looking for thankyou very much :D

Here's an example of how my Warrior/Paladin are set up... if it helps. I've truncated a lot of my macros for readability:

Warrior
1 - /startattack
2 - /cast Charge; /cast Bloodrage
3 - blank or future talent/ability
4 - /cast Mortal Strike; /cast Heroic Strike
5 - /cast Overpower
6 - /cast Execute
7 - Sweeping Strikes
8 - Cleave
9 - Thunderclap
10 - Battle Shout

Paladin
1 - /assist Warrior; /startattack; /follow Warrior
2 - /castsequence [reset=30] Seal of the Crusader, Judgement; /follow Warrior
3 - /cast Seal of Command; /follow Warrior
4 - /follow Warrior (I'm spamming MS/HS on the Warrior so this just keeps the Paladin on target)
5 - /cast Hammer of Justice
6 - /cast Judgement (separate for quick HoJ+Judgement goodness)
7 - Hammer of Wrath
8 - Consecration
9 - blank
10 - blank

Then my heal key is on "+=":
/cast [modifier:alt, target=player] Holy Light; [target=Warrior] Holy Light

The skills complement each other very well. This isn't perfectly set up yet for PvP, but I am only 48th level on both. Once I get closer to 70 I'll want keys for the Paladin to bubble/cleanse the Warrior and herself.

I also put a /follow Main behind every Paladin ability. This is to make sure that when she swings and breaks follow that she immediately tries to follow again (which also constantly points her at the Warrior's target).

Thanks to both of you, that has helped a great deal :)