I´ve tested 6 games with my new computer. Only Blood 2 runs correctly, incredible.

Dell XPS17,
Processor: Intel® Core™ i7-2720QM S.G 2,20 GHz cWith Turbo Boost 2.0 up to 3,30 GHz
Graphics: NVIDIA ® GeForce ® GT 555m de 3GB
RAM: DDR3 SDRAM 6.144 MB 1.333 MHz Dual Channel [1x2.048 + 1x4.096]
O.S: Win 7 64 bits (and Ubuntu 11.04, not used for gaming)
HD: 500GB (7,200rpm) Serial ATA Hard Drive

Age of Wonders: Sound, but no image.
Blood : Can´t run Dos Box fixed with Xp compatiblity mode
Last Express: Sound but no image. If I exit the game using the windows metakey, and then enter again I can play... On a tiny window.
Alone in the Dark (original one): Same problem that the one seen above.
Duke Nukem: Complete disaster, the game not only crashed, it changed most of my system configuration. I was forced to reinstall all the OS using the laptop hidden partition.
I didn´t test more to not get depressed, but there seems to be a huge incompatibility with DosBox, and even considering that Age of Wonders is not Dos Box based...

I´m really happy with my new laptop computer, I´ve finished many games with it (Dead Space, Dragon Age, Need for Speed Hot Pursuit, Mirror´s Edge, Crysis, Fable 3) and everyone of them run fine and with hight details, but it´s really sad to have this kind of problems with my GOG´s. At least i have my old desk computer for them, I was planning to buy a new one but now... probably not.

I have a q6600 and Nvidia 9800GTX+ under Win 7 64bit and suffer none of those problems for the games I own : Last Express, Alone in the Dark. :\ I dunno why it's running bad. Try changing the video mode of dosbox to directx instead of surface.