I have Joomla 1.5.20, Joomfish 2.0.4 and the Document Seller (DMS) 2.6.0 with Moneybookers payment gateway. I am glad that I came across the DMS as it solves all my tasks for really small amount of money and time (very high ratio quality/cost, it took me half an hour to deploy). The support team is prompt enough. It never took me more than a day to get an answer via e-mail, skype or forum. Special thanks to Mr.Tuan Pham Ngoc for the advice which guided me to Moneybookers (my sorrow was that Pay Pal does not serve Russian Merchants). So ,Guys, keep the DMS and save your money, the rest is nonsense!