Nilfred; Thanks for the quick response, I did check out the thread you referenced yesterday and downloaded the file but I'm not sure it's what I need or I don't understand what it's doing. I don't want to appear dense (or as thick as two short planks as they say in the UK) but here's where I'm having difficulty... I have a VL version of Acrobat 7 Pro. I have the original media (7.0.0). So ever since we bought it to distribute (7.0.3 update was already available by that time) it has been my goal to 'slipstream' all the patches into the original acropro.msi/data1.cab structure and not have to expand it to an 'admin install point'. The original data1.cab is around 199mb and the original disk is around 240mb. Once I expand it out to an admin install point and patch it to 7.0.9 the whole thing balloons up to around 530mb. How do I take the original and the 7.0.5/7.0.7/7.0.8/7.0.9 patches, apply them, and put all the files back into a data1.cab and acropro.msi instead of having an admin point? There must be a way to programmatically do this. Can Orca be used to generate the file necessary to re-cab the data1.cab by somehow reading the file manifest of the acropro.msi and using that to tell makecab how to recab the files? Thanks! Mike