C# installs a program to move in 2000, need SP3 certainly?

Install a program with what C# does, accessary Windowsinstaller3.1 and.NETFrameWork;
When.NetFrameWork moves below Windows2000, clew needs Install3.0; Get online downloaded Install3.0, moving Install3.0 clew needs SP3.
Excuse me: Must be SP3 patch hit below?000? Does 2000Server fall?
Up2000, updating SP3 is indispensible

The thing of Microsoft, the patch had better be hit neatFavour, there is a specification on systematic versionCan look below this link
Http://www.cnblogs.com/cnet/archive/2005/04/15/138167.html

Want Sp2 only in factMustIf be Formwork1.x, need not need Sp3, if be 2, need the support of Install3.0 certainlySP4 also is hitWhy should use installation program? ? ?
Your software cannot does make it solution press practicable? Many thanks everybody. Small strong the most correct.