diff --git a/doc/pisi.lyx b/doc/pisi.lyx
index 024475cb..1afa84dd 100644
--- a/doc/pisi.lyx
+++ b/doc/pisi.lyx
@@ -831,6 +831,9 @@ files.xml dosyalar
 pisi-files.dtd
 \emph default 
  dosyasında tanımlanmıştır.
+\layout Standard
+
+Bunlarin da acaba attribute seklinde olmasi daha mi dogru olur? -- Eray
 \layout Subsection
 
 PSPEC Deposu
diff --git a/pisi/files.py b/pisi/files.py
index 8fa27f9f..ddc44365 100644
--- a/pisi/files.py
+++ b/pisi/files.py
@@ -3,12 +3,21 @@
 
 
 class FileInfo:
+    
     def __init__(self, node):
         self.path = getNodeText(getNode(node, "Path"))
         self.type = getNodeText(getNode(node, "Type"))
         self.size = int(getNodeText(getNode(node, "Size")))
         self.md5Sum = getNodeText(getNode(node, "MD5Sum"))
 
+    def elt(self, dom):
+        ## FIXME: looking for the clean way to do it
+        elt = dom.createElement()
+        elt.appendChild(dom.createTextNode(path))
+        elt.appendChild(dom.createTextNode(type))
+        elt.appendChild(dom.createTextNode(size))
+        elt.appendChild(dom.createTextNode(size))
+        return elt
 
 class Files(XmlFile):
     
@@ -19,8 +28,12 @@ class Files(XmlFile):
         self.readxml(filename)
 
         fileElts = getAllNodes(node, "File")
-        self.installDeps = [FileInfo(x) for x in fileElts]
+        self.list = [FileInfo(x) for x in fileElts]
 
     def write(self, filename):
-        pass
+        #FIXME: need a function to clear DOM first!
+        for x in list:
+            pass
+            #elf.putNode("File/
+            
 
diff --git a/pisi/install.py b/pisi/install.py
index cb0168b8..f257674f 100644
--- a/pisi/install.py
+++ b/pisi/install.py
@@ -15,6 +15,9 @@ class PisiInstallError(Exception):
     pass
 
 class PisiInstall:
+# tek bir fonksiyon olan bir seyi class yapmak dogru mu?
+# ne state sakliyor PisiInstall?
+
 	def __init__(self, package_fn):
 		self.install(package_fn)
 
diff --git a/pisi/xmlfile.py b/pisi/xmlfile.py
index 29b6d1da..ad7d9d86 100644
--- a/pisi/xmlfile.py
+++ b/pisi/xmlfile.py
@@ -84,6 +84,35 @@ def getAllNodes(node, tagPath):
     return nodeList
 
 
+def appendTagPath(node, tagpath, child):
+    """append child at the end of a tag chain"""
+    for tag in tagpath[0:len(tagpath)-1]:
+        node = node.appendChild(createElement())
+    node.appendChild(child)
+
+def putNode(node, tagpath, newnode):
+    tags = tagpath.split('/')
+
+    # iterative code to search for the path
+        
+    # get DOM for top node
+    nodeList = node.getElementsByTagName(tags[0])
+    if len(nodeList) == 0:
+        appendTagPath(node, tagpath, newnode)
+
+    node = nodeList[0]              # discard other matches
+    tags.pop(0)
+    while len(tags)>0:
+        tag = tags.pop(0)
+        nodeList = node.getElementsByTagName(tag)
+        if len(nodeList) == 0:
+            tags = tag.insert(0)
+            appendTagPath(node, tags, newnode)
+        else:
+            node = nodeList[0]
+
+    return node
+
 # xmlfile class that further abstracts a dom object
 
 class XmlFile(object):