I think if you really need to get your website up quickly, that you should use Digital Space's web-based file manager. Just upload your files through that to get your website up immediately, then spend the time to learn how to use the new programs (which I have not used, so sorry cannot help).
As well, I would suggest WSFTP for a publishing program. I've never had an issue with it. Digital Space also has instructions for it.
Here's the File Manager instructions, they seem simple enough:
Uploading your Website Content with the File Manager
Digital Space includes an easy-to-use web-based File Manager in every hosting account so that you can upload files or make minor revisions to your website without using regular FTP-based publishing software. To access the File Manager, first log in to your Digital Space Control Panel by clicking the "Log in to your Control Panel" button in the top right corner of the My Products section, inside of the Customer Manager at https://my.digitalspace.net.
1. Click the File Manager icon in the Hosting group.
2. Create and upload files and directories.
Place the files and directories that should be accessible via HTTP protocol to the httpdocs directory, and files/directories that should be transferred securely over SSL protocol to the httpsdocs directory. Place your CGI scripts into the cgi-bin directory.
* To create a new directory within your current location, click the Add New Directory button.
* To create new files in the required directory, click Add New File, in the File creation section specify the file name, select the Use html template check box, if you want file manager to insert some basic html tags to the new file, and click OK. A page will open allowing you to enter the content or html-formatted source of a new file. After you are done, click OK.
* To upload a file from the local machine, click Add New File, specify the path to its location in the File source box (or use the Browse button to locate the file), and click OK.
When you upload web content through File Manager or FTP, your control panel automatically sets the appropriate access permissions for files and directories. The permissions are represented as three sets of symbols, for example, 'rwx rwx r--'. The first set tells what the owner of the file or directory can do with it; the second tells what the user group, the file or directory belongs to, can do with the file or directory; the third set indicates what other users (the rest of the world, i.e. Internet users visiting a site) can do with the file or directory. R means the permission to read the file or directory, W means the permission to write to the file or directory, and X means the permission to execute the file or look inside the directory.
To modify permissions for a file or directory, in the Permissions column, click the respective hyperlink representing the set of permissions. Modify the permissions as desired and click OK.
To edit the source code of a file, click file edit.
To edit the Web page in the built-in visual editor (available only to users of Microsoft Internet Explorer), click . When editing an HTML file, the control panel opens internal WYSIWYG editor by default. If you want to edit the source code of the HTML file, click Html. To return back to WYSIWYG mode, click Design.
To view the file, click .
To rename a file or directory, click . Type in a new name and click OK.
To copy or move a file or directory to another location, select the required file or directory using the appropriate check box, and click Copy/Move. Specify the destination for the file or directory to be copied or renamed to, then click Copy to copy, or Move to move it.
To update the file or directory creation date, click Touch. The time stamp will be updated with the current local time.
To remove a file or directory, select the corresponding check box, and click Remove selected icon. Remove Selected. Confirm removal and click OK.