Hi, For some odd reason I can't seem to slipstream Vista SP1 into my original Vista Ultimate x64 OEM ENG DVD. I have tried 'Windows Vista Service Pack 1 Five Language Standalone' and 'Windows Vista Service Pack 1 All Language Standalone' but it always ends in 'Failed. No changes were saved'. I try from a Vista Ultimate x64 SP1 installation and there's plenty of hard drive space (208 GB free). Doesn't vLite works with OEM versions of Vista? Best regards Thomas Gammelgaard Madsen