If you are an IMG applying to residency this year, please take a look at the newly available ERAS Support Services section of the ECFMG website. There you'll find important information regarding obtaining your token (available July 1) and submitting your supporting documents.
Note that for ERAS 2015 all letters of recommendation must be submitted through the AAMC's LOR Portal (LoRP) or ECFMG's Medical School Web Portal. The former is for waived letters (highly recommended by me) and the latter is for unwaived ones.