[Closed] Edit texture paths

Hi everyone,
First, i should say, im a completely noob in maxscript. But i have to make a script to edit the texture paths.
Example of original path: C:/MyModel/Color.psd
And i have to change it like this: ./Whatever/Color.dds

Any help to board this?

I have this atm (Very very WIP)

rollout  Hog_FBX_Exporter "Hog FBX Exporter" width:408 height:288
   (
   	groupBox grp1 "Model Data" pos:[8,8] width:392 height:96
   	editText tbName "" pos:[104,40] width:208 height:16
   	label lbl1 "Model Name" pos:[16,40] width:64 height:16
   	label lbl2 "Color Map Path" pos:[16,72] width:80 height:16
   	editText tbColorMap "" pos:[104,72] width:208 height:16
   	button btGo "Export" pos:[112,232] width:200 height:32
   	groupBox grp2 "Options" pos:[8,120] width:392 height:96
   	button btGenTexturesFolder "Generic Textures Folder" pos:[64,160] width:132 height:32
   	button btModelFolder "Model Folder" pos:[216,160] width:132 height:32
   	pickButton btPickModel "Pick Model" pos:[320,40] width:72 height:48
   	
   	on btPickModel picked obj do
   	(
   		ModelName=obj.name
   		tbName.text=ModelName
   	
   		tbColorMap.text =obj.mat.diffuseMap.filename
   
   )
   	--Path: generic textures folder
   	on btGenTexturesFolder pressed  do
   (
   	path="./GenericTextures"
   	tbColorMap.text=path
   	)
   	
   	--Path: Same folder than model (Model and its folder must have the SAME name)
   	on btModelFolder pressed  do
   (
   	--path="../"+obj.name
   	path="./"+tbName.text
   	--messagebox path
   	)
   	
   	on btGo pressed  do
   (
   	ModelName=tbName.text
   	path=tbColorMap.text
   	
   		for m in getClassInstances BitmapTexture do 
   	   (
   		   m.fileName=filenameFromPath m.fileName
   		print m.filename
   		 
   	   )
   	)
   )
   createdialog Hog_FBX_Exporter

I can clean the paths, now i have to add text to the paths and change the extension from whatever to .dds
Thank you guys