1) In My custom master page I have registered my CSS as follows,
<SharePoint:CssRegistration name="/mycssfolder/css/mycss.css" After="corev4.css" runat="server"/>
Now I have my folder mycssfolder, with me. Where should I place it? I placed in the root directory under my port 2222.
2) In my CSS I have a reference to an Image that reside in mycssfolder, now is my reference correct? Where should I place this folder? [Actual folder mycssfolder/images/mainBG.jpg]
3) Now finally If I am deciding to place my Entire folder mycssfolder in a document library called 'css'. Then how should I change these entries?