help with wireless router

My wireless router needs to be replaced. I need some advice on buying a new one. I don't have a lot of money in the budget. My current router is a netgear WNR2000.

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: AMD A4-5300 APU with Radeon(tm) HD Graphics, AMD64 Family 21 Model 16 Stepping 1
Processor Count: 2
RAM: 3534 Mb
Graphics Card: AMD Radeon HD 7480D, 512 Mb
Hard Drives: C: Total - 476837 MB, Free - 349737 MB;
Motherboard: MSI, FM2-A75MA-E35 (MS-7721)
Antivirus: Microsoft Security Essentials, Updated and Enabled