Populate my EKMPowershop Store

Hello I have an EKM Powershop store, and am wanting this populating with produts from my supplier. I have a spreadsheet with all of the products on, along with all the different parts. This need changing into a format that EKM Powershop will read, and all of the products uploading. The pictures need putting on, along with the variants for the products. As this is a personalised gifts website, there needs to be areas for people to add their name etc etc. This is also in the spreadsheet. I just dont know how to change it into the right format. This has to be done to a high standard, and i need this doing straight away. Please only bid if you cand do this. Thanks