May I reccomend the IBM SurePOS 500w series unit for your bar. It's a touch screen unit with the ability to send an order to a receipt printer in a kitchen, etc...
It is IBM's food service industry model.
US Price: NEW FROM IBM $6,605.00 USED FROM EBAY $800.00 to $3,800.00.
The spec's are below:
Hardware
Processor1 2.0GHz Intel® Celeron® (400MHz FSB)
Storage
System memory2 128MB (2GB maximum)
Video memory (shared with system memory) 8MB to 64MB UMA
Hard disk drive3 40GB standard or optional 512MB CompactFlash4
System dimensions and weight
Maximum dimensions (WxDxH) 12-inch: 321x325x384 (mm)/
12.6x12.8x15.1 (inches) (without MSR)
15-inch: 383x338x410 (mm)/
15.1x13.3x16.1 (inches) (without MSR)
17-inch: 414x383x413 (mm)/
16.3x15.1x16.3 (inches) (without MSR)
Weight 12-inch: 23 lbs/10.5 kg (without MSR)
15-inch: 24.5 lbs/11.1 kg (without MSR)
17-inch: 30.2 lbs/13.7 kg (without MSR)
Power requirements Universal Switched Power Supply
76W typical/200W maximum
Connectivity
Powered, standard and PC USB
RS-232
Parallel port
PS/2 keyboard/mouse
RJ45 Ethernet
S/VGA video
Audio mic-in/line-out
Headphone
Cash drawer
Peripheral options5
Secondary displays IBM SurePoint™ Solution (touch and non-touch)
Distributed, pole-mounted, 40-character customer display
Integrated 40-character customer display
All-points-addressable character graphics display
Printers IBM SureMark™ standard and fiscal printers
Keyboard CANPOS keyboard (includes 32 programmable keys, numeric keypad and pointing device)
Cash drawers Full size and compact
Integration trays Fits on full-size and compact cash drawers, as well as countertop
Magnetic stripe readers Three track or JUCC
Expansion options
External 1.44MB diskette drive
External CD-ROM
PC card slot
Software
Operating systems6 Microsoft® Windows® 2000
Microsoft Windows XP Professional Edition7
Microsoft Windows XP Embedded
IBM Retail Environment for SUSE LINUX
IBM PC DOS 2000
Novell SUSE LINUX Solution (SLRS)
Drivers supported OPOS and JavaPOS™
Industry standards
Systems management WfM
SMBIOS
WOL
PXE
Power management8 APM and ACPI