Original file (102 bytes):

(use awful)

(enable-sxml #t)

(define-page (main-page-path)
  (lambda ()
    "Hello there!"))


Testing file-read:
CHICKEN
(c) 2008-2014, The Chicken Team
(c) 2000-2007, Felix L. Winkelmann
Version 4.9.1 (rev b00d73a)
windows-mingw32-x86 [ manyargs dload ptables ]
compiled 2014-04-19 on Cairo (MINGW32_NT-6.1)
#;1> (use posix)
; loading c:/MinGW//lib/chicken/7/posix.import.so ...
; loading library posix ...
#;2> (define fileno (port->fileno (open-input-file "lobby.css")))
#;3> (define read (file-read fileno 95))
#;4> read
("(use awful)\n\n(enable-sxml #t)\n\n(define-page (main-page-path)\n  (lambda ()
\n    \"Hello thero ther" 89)
#;5> (string-length (car read))
95