Hi I'm not really familiar with portable consoles, appreciate it if someone can confirm something with me.

I bought a Nintendo DS several days ago for RM500++. The seller "installed" all the Pokemon games (Gold, Silver, Black, White etc) and various other game into a R4 card. So basically I have a cartridge that contains many games. As far as I recall, by right one cartridge generally should have 1 or few games only.

1st Question:
Whenever I play Pokemon Black, the game often hang/freeze. Do you all encounter this normally?

2nd Question:
With this kinda console, will I be able to do trades, battles & other multi-player features? 

Thanks for all your inputs.

For me it's because I only want to play pokemon (I'm not a gamer and pokemon is the only game I like hehe), so I'm looking for the cheapest console to play pokemon with. Also the last pokemon game I played was Emerald so I can still play Diamond, HeartGold, Black and Black2 on the DS Lite.