Hello. So I bought an OEM:NSLP licence of Windows 7 Home Premium and it came with an installation DVD. I had a look at it and noticed that it's not Media Refresh. I also found something else - while every other Windows 7 ISO I have downloaded has the channel in ei.cfg set to Retail this one is OEM. So what does the difference in the channel do? Will I have any problems using my product key if I used a disc from the Retail channel? Because I'd rather use a Media Refresh ISO if I can. Sorry if anything was confusing. English isn't my native language.