Power Supply Cord Volt question!!!

Now need some tech help here. I'm buying a new power cord for my Ultra 550 watt PSU, the one they give me is too short and i don't want to buy one of those extensions (don't want to buy a add on). I want a longer cord.

Now i "could" just go and order one from TigerDirect, but i don't really want to pay there shipping (newegg doesnt' carry ultra stuff).

I was thinking, can i buy a universal power cord and use it on my Ultra 550 watt PSU??? Would it work, or does it need to be a certain type of cord? I really don't want to do something dumb like get a cord that doens't support they volts to my PSU and short my whole system just to save $6 bucks.

My PSU.
http://www.tigerdirect.com/applications/searchtools/ite...

The cord i think i need.
http://www.tigerdirect.com/applications/SearchTools/ite...

The cord i want for the price.
http://www.walmart.com/ip/V7-V7-PWRRPL-10-10-Computer-P...

Now...is this safe for my rig? Does it even matter? If not way?