NSString and string contains

FROM : Tom Jones
DATE : Sun Mar 02 21:31:44 2008

Hello,
I'm fairly new to Cocoa, so please excuse me if I'm not using the 
right terminology.

I have an NSArray which contains String values and I want to loop 
though it and determine if any of those string contain words I'm 
looking for. I have tried but have been unsuccessful.

Example...

unsigned arrayCount = [array count];
for(unsigned j = 0; j < arrayCount; j++)
  {
   id obj;
   obj = [array objectAtIndex:j];
   /* Here is where I'm having trouble
   I know this is not real :-)
   if ( [obj inStr:@"home"])
   {
       NSLog(@"I found home, %@", obj);
   }
   */
}


I hope the example helps, thanks,
tom