控件(破解版,只限.net2005)和皮肤下载地址:http://www.cnblogs.com/liuxzh1026/archive/2006/08/19/480981.html 
嵌入在项目中: 
将下载的皮肤文件和irisskin2.rar解压,在项目中添加现有项,将皮肤文件添加进项目;将irisskin2.dll引用进项目。皮肤文件属性中的“生成操作”改为嵌入的资源。引用的irisskin2.dll属性中的“复制本地”改为true。 
在代码中添加枚举: 
 public enum skintype 
    { 
        calmness, 
        deepcyan, 
        eighteen, 
        emerald, 
        glassbrown, 
        longhorn, 
        macos, 
        midsummer, 
        mp10, 
        msn, 
        oneblue, 
        page, 
        realone, 
        silver, 
        sportsblack, 
        steelblack, 
        vista1, 
        vista2, 
        warm, 
        wave, 
        xpsilver 
    } 
添加调用方法: 
public static sunisoft.irisskin.skinengine se=null; 
        public static void changeskin(skintype st) 
        { 
            system.reflection.assembly thisdll = system.reflection.assembly.getexecutingassembly(); 
            if (se == null) 
            { 
                se = new sunisoft.irisskin.skinengine(application.openforms[0], thisdll.getmanifestresourcestream("alldj.skin." + st.tostring() + ".ssk")); 
                se.active = true; 
                for (int i = 0; i < application.openforms.count; i++) 
                { 
                    se.addform(application.openforms); 
                } 
                 
            } 
            else 
            { 
                se.skinstream = thisdll.getmanifestresourcestream("alldj.skin." + st.tostring() + ".ssk"); 
                se.active = true; 
            } 
        } 
        public static void removeskin() 
        { 
            if (se == null) 
            { 
                return; 
            } 
            else 
            { 
                se.active = false; 
            } 
        } 
调用changeskin方法换肤,调用removeskin方法恢复系统默认皮肤。