There are two places on Itaewon - one up near the Cheil building, the other (I prefer) is Arirang Ski Shop. I just bought a jacket there so have a card...lucky....#64-10, Itaewon-dong, Yongsan-gu, Tel: 792-5569, emai:
ski5569@orgio.net. They speak good english and have imports - Spyder, Roxy etc. It is on the south side of Itaewon between McDonands and Nike - in the basement of the Reebok store (I think it says)...