Index: wp-activate.php
===================================================================
--- wp-activate.php	(revision 17142)
+++ wp-activate.php	(working copy)
@@ -46,7 +46,9 @@
 			    <label for="key"><?php _e('Activation Key:') ?></label>
 			    <br /><input type="text" name="key" id="key" value="" size="50" />
 			</p>
-			<?php submit_button( __('Activate'), 'submit' ); ?>
+			<p class="submit"> 
+				<input id="submit" type="submit" name="Submit" class="submit" value="<?php esc_attr_e('Activate') ?>" /> 
+			</p> 
 		</form>
 
 	<?php } else {