Hi Gimpchat members!!! Love to be a part of a gimp community...never knew this chat forum existed till today

When I discovered gimp, I felt like this
I design various things on it for fun & for my friends. I have been creating designs and now I decide to print it for size 1mx1m. The printing company adviced that they want 300 dpi in tiff file. I tried various sites to find out the answer to create 300dpi image file but still confused as none of them tell you the right answer.
My question is how do I create an image that can be (printed 1mx1m) 300 dpi quality. I see pixels/inch & pixels all over. Please ignore my ignorance in dpi & ppi. I know its dots/inch & pixels/inch.
So, when I create new image, what should I put in image size (width & height) and pixels/inches etc on the drop down. Also, what should I put at the X & Y resolutions. I'm stuck

Help! help! Please

Thankssssssssssssssssssssssssssssssssssssssssss a ton!