2
upload them via FTP.
if your html have a structure like this:
--+your.html
+images/--+image1.gif
+image2.gif
+ ...
if you use the original Tiny Content:
--+tinycontent--+content/--+your.html
+images/--+image1.gif
+image2.gif
+ ...
also usable in TinyD:
--+tinycontent--+content/--+your.html
+images/--+image1.gif
+image2.gif
+ ...