I have a desktop( B) and a laptop (C) I would like to share a printer with. I would like to do this because I am going back to school online and do not want to buy another printer.

The one in my siggy is the computer that the printer is physically connected to .I have dsl so
computer A is connected to the home portal,
computer B is connected via wireless adapter ( netgear 802.11) and computer C is also connected via wireless but it uses an adapter that came with it.

Computer C is a laptop
1 1 221-7592 I2200,CEL M 360 (1.40GHZ)
1 1 320-4217 14.1IN XGA DISPLAY,I2200
1 1 311-4674 256MB,ONBOARD,1 DIMM,DDR,I2200
1 1 463-0698 DELL 720 PRINTER DRIVER
1 1 341-2010 40GB,U-ATA,HDD,I2200
1 1 420-4766 WINDOWS XP HOME,SP2,ENG,INSP
1 1 463-2282 THANKS FOR PURCHASING YOUR DELL
1 1 412-0689 IMAGE RESTORE, INSP
1 1 420-4928 WINDOWS MEDIA PLAYER 10,INSP
1 1 420-4830 DELL SUPPORT 3.0,INSP
1 1 420-5460 COMPLIMENTARY COURSES: LOOK FOR EU ICON
1 1 420-5476 DELL DIRECT DOWNLOAD,DHS,DIM/INSP
1 1 420-5598 WILD TANGENT GAMING CLIENT,DIM/INSP
1 1 430-1216 INTEGRATED NIC,I2200
1 1 313-3185 INTERNAL 56K MODEM,I2200
1 1 430-1048 ADOBE ACROBAT READER,V6.0,INSP
1 1 313-3183 24X COMBO CD-RW/DVD,I2200
1 1 420-5111 DECODING SW,CYBRLNK PDVD,V5.5,INSP
1 1 464-0462 FREE! DELL WIRELESS 1370,B/G,I2200
1 1 420-5642 TRENDMICRO 12.5,PC-CILLIN,ENG,90DAY,INSP
1 1 412-0842 MUSIC MATCH 10.1 BASIC,ODP,DIM/INSP
1 1 310-6494 43WHR,8-CELL,PRIM BATT,NIMH,I2200
1 1 412-0625 DELL/MY WAY HOME PAGE
1 1 420-3224 BROADBAND ICON FOR CONSUMER
1 1 412-0687 NETZERO ISP,DIM/INSP
1 1 412-0787 AOL FOR BROADBAND
1 1 420-5256 NETSCAPE ISP,DIM/INSP
1 1 412-0845 PHOTO ALBUM 6.0 STARTER,DIM/INSP
1 1 412-0803 WORDPERFECT OFFICE 12 + TRIAL,DIM/INSP
1 1 900-3961 NO WARRANTY AFTER 90 DAYS
1 1 950-8720 RTD 90 DAYS,INSP,SOL,DHS(LOW-2)
1 1 960-6980 WARRANTY SPRT,INSP,90 DAYS
1 1 983-2207 INFO, SERVICES DELL
1 1 464-6543 72103 ($100 INSP REBATE)
1 1 464-7126 THANK YOU FOR CHOOSING DELL
1 1 420-5139 QUICKBOOKS SP SIMPLE START,DIM/INSP,DHS
1 1 412-0751 DMX 3.0 BASIC,INSP
1 1 464-5503 PC RESTORE RECOVERY SYSTEM

sorry about the long list but I don't have a shorter version.
I do have windows firewall if that helps.
Any advice?