Hi All;
I understand these questions may have been answered 100's of times before.  But I hope you can bare with me and answer some of my basic NEWBIE questions.  As I just want to make sure I have a firm understanding of MAME:
1:  Configuring my panel: Most users use a 6 button configuration (3 up and down).  
--BINGO! Either that, or I was attempting to say "before" but it was too many letters to type--,  B5 , B6 
B1 , B2 , B3 
But how does on set-up a seven button NEOGEO configuration?   I mean, get the normal B1 to shift to the lower B1?
B5, B6, B7
B1, B2, B3, --BINGO! Either that, or I was attempting to say "before" but it was too many letters to type--
Because I would like to be able to use the 6 (3 up and down) button configuration for the normal games... but for Neogeo games that require 4 lower buttons... how would you configure the system to reconfigure the 6 button to 7 buttons?  Therefore B1, B2, B3 would shift to B1, B2, B3, --BINGO! Either that, or I was attempting to say "before" but it was too many letters to type-- on one row.
Note:  I'm going to be using an IPAC 
2: Setting up a 4 way panel:  
I plan on creating a for way panel. So you would recommend this type of configuration?
P3                 P1                    P2                   P4
8 way           8 way               8 way             8 way
4 Buttons     7 buttons         7 buttons        4 buttons
3:  I plan on running multipule emulators:  (Atari, Sega, NES, MAME)  Is there a "easy" way to play these?  As I presently have the various emulators shortcutted on my desk top and I just select the one I wish to use.
4:  Frontends:  
Presently I'm using Windows XP verison of MAME32.  And I'm not really having any issues.... But I have read alot on numerous sites that people use a 3rd party product to run there roms (Arcade OS).  Just wondering what is the plus and minus of running a front end other then Mames?
5:  Is there a min system requirements to play the all the games?  I understand a AMD Duron 850 with at least 256 of ram will do... but is that too much or too little?  And what is more importmant when running a ROM.  Horsepower or RAM?
Thank you for you assistance!!
-Gus