I did a new installation for DNN 5.4 for the community edition. Then I put some files that seems like they were done on an old version of DNN, not sure since I didn't do them, however when I try to build the site on Visual Web Developer 2010 Express I get the  "Parser Error Message: Stream is not a valid resource file"  error. I search and some post said to change the ASP back to 1 instead of 2, others say to delete the 2 files with resources extension and other post say to delete the 2 weird characters at the beginning of line 1 on the resource file. Unfortunately none of them work for me. I'm very new to DNN and I need some help please. I'm basically just trying to build a test enviroment.

Thanks in advance for the help.
-LRod

Thanks for your reply Sebastian. I think I'm very lost then. I'm trying to build like a test enviroment on my local machine with our web site files. However i never use DNN before and i download DNN and it opens fine, but when i put the website files and i open from browser I get that error. I open VS and try to rebuild and i get the same error. I'm not creating any module or edit any content. I really don't know how to manage the site through DNN on my machine. I log on through the site, but i want to open on my local machine just as it would be live. I found out that the site it's base on DNN 3, so another error that i get it's that the version doesn't match with the DNN version. I download latest version 5.4. As of now when i open DNN on localhost i just get the DNN template, but i want to open my site. Any way you can help? Thank you .

Ok I understand. So I'm doing it from start again. - I couldn't find DNN 3 so I download the lates one V.5 - I backup and restore database on SQLEXPRESS - I setup IIS to ASP.NET 1.1 - I copy my site files on new local web site folder - I add the local address entry to PortalAlias table NOTE: - I have Windows XP PRO QUESTION: - On PortalAlias table I see the other portals that my site has which I need access to them as well. Do I have to put the local site address as well on those portals or just Portal 0 would do? - Once I run the site on my browser http://localhost/DNNSite/ I get an error which is obious because of the different version of DNN. Do i need to find DNN3 and download it or I can do something to upgrade it to DNN5? This is the error: DotNetNuke Upgrade Error The Assembly Version ( [ASSEMBLYVERSION] ) does not match the Database Version ( [DATABASEVERSION] ) ERROR: Could not connect to database. SQL Server does not exist or access denied.