To start sieving first visit MikeH's Site then download the cmov client for non-P4's or the sse2 for P4's. Extract the new dat into the same folder as the client. Use Winzip to extract them. tutorial for rieselsieve may help out. For references purposes the old dat, a clear text version, and A very small zip file, indicating the next couple of days of main and DC PRP efforts and the daily shrinkage of the new sob.dat file.
A Excel spreadsheet, to help you calculate, g/day based upon speed, time to complete a range. Also Sobistator, a great addon tool!!!
A complete holes report can be found here