(1) You usually only need the expected proportion when calculating sample sizes for proportions. You may want to use results from a MICS or DHS survey to find expected proportions. Sample sizes for the commonly used "WHO" consensus indicators can be difficult as there ares many indicators with different expected proportions and different denominators. Some indicators (e.g. continuing BF) have a narrow age-range (3 months) for the denominator. This means that you may need a very large overall sample size in order to estimate some indicators with useful precision. The "WHO" indicators work well with large samples but are not well suited to small sample surveys. You may want to consider alternatives to the "WHO" indicators. An example can be found [url=https://dl.dropbox.com/u/73741635/meSL.pdf]here[/url]. (2) ENA for SMART has a sample size calculator. I commonly use [url=http://sampsize.sourceforge.net/iface/index.html]GNU SampSize[/url] for sample size calculations. I have a Windows program [url=http://www.brixtonhealth.com/samplexs.html]here[/url] which you may find useful. Software for survey analysis depends on your survey design and your experience. You could use (e.g.) EpiInfo, SPPS (with the "complex samples" module), R (with the "survey" library), STATA, SAS, SUDAAN, &c. I hope this helps.