hi! I've got a problem: I need to write a cache driver to cache some explicitly selected files with HUGE caches. The real situation is, that I should cache 3-4 files (each can have more GB in size, and can be placed on local workstation, local network or internet) with 1-30 MB caches (in memory!) per file. I tried to find some infos in the WinNT 4.0 DDK about the cache manager, but I didn't find any (now I'm searching some MSDN CDs) One basic idea of mine is, that actually I should intercept any file reads (and writes) like anti virus resident guards (shields) do, but this is only the idea... no code, no docs, so can anybody help me? The cache sould be completly transparent to other programs, but there are some limitations: 1) for the beginning it's sufficient to cache file reads, and 2) the file reads are generally sequencial (means that is enough to have the cacheing efficient for sequiencial file reads from the start to the end) alex ps. tips, websites, docs, etc. would also good, sample code would be the best;