diff --git a/collects/mzlib/sandbox.ss b/collects/mzlib/sandbox.ss
index 0ddc451..e1120f2 100644
--- a/collects/mzlib/sandbox.ss
+++ b/collects/mzlib/sandbox.ss
@@ -1,10 +1,31 @@
 (module sandbox scheme/base
   (require scheme/sandbox
            (prefix-in mz: (only-in mzscheme make-namespace)))
-  (provide (except-out (all-from-out scheme/sandbox)
-                       make-evaluator
-                       make-module-evaluator
-                       gui?)
+  (provide sandbox-init-hook
+           sandbox-reader
+           sandbox-input
+           sandbox-output
+           sandbox-error-output
+           sandbox-propagate-breaks
+           sandbox-coverage-enabled
+           sandbox-namespace-specs
+           sandbox-override-collection-paths
+           sandbox-security-guard
+           sandbox-path-permissions
+           sandbox-network-guard
+           sandbox-make-inspector
+           sandbox-eval-limits
+           kill-evaluator
+           break-evaluator
+           set-eval-limits
+           put-input
+           get-output
+           get-error-output
+           get-uncovered-expressions
+           call-with-limits
+           with-limits
+           exn:fail:resource?
+           exn:fail:resource-resource
            (rename-out [*make-evaluator make-evaluator]
                        [gui? mred?]))
 
diff --git a/collects/mzlib/sendevent.ss b/collects/mzlib/sendevent.ss
index 15c5fc6..fff2800 100644
--- a/collects/mzlib/sendevent.ss
+++ b/collects/mzlib/sendevent.ss
@@ -1,16 +1,14 @@
+#lang scheme/base
+(require scheme/gui/dynamic)
 
-(module sendevent mzscheme 
-  (require "etc.ss")
-  (provide send-event)
+(provide send-event)
   
-  (define send-event 
-    (opt-lambda (who class msg [data (void)] [args null])
-      (let ([send-event (with-handlers ([exn:fail? (lambda (x) #f)])
-			  (dynamic-require '(lib "mred.ss" "mred") 
-					   'send-event))])
-	(if send-event
-	    (send-event who class msg data args)
-	    (raise
-	     (make-exn:fail:unsupported
-	      "send-event: only supported in MrEd"
-	      (current-continuation-marks))))))))
+(define send-event 
+  (lambda (who class msg [data (void)] [args null])
+    (if (gui-available?)
+        ((gui-dynamic-require 'send-event) who class msg data args)
+        (raise
+         (make-exn:fail:unsupported
+          "send-event: only supported in MrEd"
+          (current-continuation-marks))))))
+