[Old Reliable]

Well it's that time of year......no wait it isn't...but I need some help getting parts for my computer and i'm doing it one part at a time, I was wondering if anyone could help me on these things...
my current ethernet card broke, but it still functions. the part where the plug goes into the card snapped off but it was soldered back together. should I get a new one? or would it not improve my connection.

also would this be a good case or is it a ripoff, and do I need to take anything else into consideration before buying a case? http://www.antec-inc.com/en_perf2_630.html