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diff --git a/website/archive/binaries/mac/src/clustalw/src/general/ClustalWResources.cpp b/website/archive/binaries/mac/src/clustalw/src/general/ClustalWResources.cpp
new file mode 100644
index 0000000..480ed51
--- /dev/null
+++ b/website/archive/binaries/mac/src/clustalw/src/general/ClustalWResources.cpp
@@ -0,0 +1,148 @@
+/**
+ * Implements a singleton that maintains program resources.
+ * The single instance is (re)instantiated on demand like:
+ *     Resources *res = Resources::Instance();
+ *
+ * 24-05-07,Nigel Brown(EMBL): created.
+ * 3-7-07, Mark Larkin, modified this class for clustalw 
+ */
+#ifdef HAVE_CONFIG_H
+    #include "config.h"
+#endif
+#include "ClustalWResources.h"
+#include <iostream>
+#include "clustalw.h"
+#include <fstream>
+using namespace std;
+ 
+namespace clustalw
+{
+
+//environment variables
+static const char *CLUW_INSTALL_DIR = "CLUW_INSTALL_DIR";
+
+//return the sole instance
+ClustalWResources *ClustalWResources::Instance() {
+    static ClustalWResources instance;
+    return &instance;
+}
+
+ClustalWResources::ClustalWResources()
+{
+    //defaultPath
+    defaultPath = ".";
+
+    //executablePath
+    executablePath = ".";
+    
+    //installPath
+    installPath = ".";
+    char *env;
+    if ((env = getenv(CLUW_INSTALL_DIR)) != 0) 
+    {
+        installPath = string(env);
+    }
+
+    homePath = "";
+}
+
+void ClustalWResources::setPathToExecutable(string path) 
+{
+    executablePath = dirname(path);
+}
+
+string ClustalWResources::dirname(string path) 
+{
+    string tempString;
+    int size = path.size();
+    tempString = path;
+    for (int i = size - 1; i > 0; i--) 
+    {
+        if (tempString[i] == DIRDELIM) // Mark, no standard function in c++
+        { 
+            tempString.erase(i);
+            break;
+        }
+    }
+    return tempString;
+}
+
+void ClustalWResources::dump() 
+{
+    printf("%s => %s [%s]\n%s => %s\n%s => %s\n",
+           "installPath", installPath.c_str(), CLUW_INSTALL_DIR,
+           "executablePath", executablePath.c_str(),
+           "homePath", homePath.c_str()
+           );
+}
+
+string ClustalWResources::findFile(const char *file, const ClustalWResourcePathType where) const 
+{
+    return findFile(string(file), where);
+}
+
+string ClustalWResources::findFile(const string file, const ClustalWResourcePathType where) const 
+{
+    const string *path;
+    ifstream ifs;
+
+    switch (where) 
+    {
+        case InstallPath:
+            path = &installPath;
+            break;
+        case ExecutablePath:
+            path = &executablePath;
+            break;
+        case HomePath:
+            path = &homePath;
+            break;
+        default:
+            path = &defaultPath;
+            break;
+    }
+    char delim[1];
+    delim[0] = DIRDELIM;
+    delim[1] = 0;
+    
+    string fileName = *path + string(delim) + file;
+
+    ifs.open(fileName.c_str(), ifstream::in);
+    if (ifs.fail()) {
+        return string();
+    }
+    
+    if (ifs.is_open() && ifs.good()) 
+    {
+        ifs.close();
+        return fileName;
+    }
+    return string(); //not found/readable
+}
+
+// Search for a (string) file in a succession of likely locations and
+// return the full path as (string).
+//
+string ClustalWResources::searchPathsForFile(const string fileName) const 
+{
+    string file;
+    while (1) {
+        file = findFile(fileName, InstallPath);
+        if (file != "") break;
+        
+        file = findFile(fileName, ExecutablePath);
+        if (file != "") break;
+        
+        file = findFile(fileName, HomePath);
+        if (file != "") break;
+        
+        file = findFile(fileName);
+        if (file != "") break;
+        
+        file = fileName; // give up
+        break;
+    }
+    return file;
+}
+
+}